Galissas weather by month

Check out Galissas weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Galissas (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
55°F maximum daytime temperature in January in Galissas55
55°F maximum daytime temperature in February in Galissas55
59°F maximum daytime temperature in March in Galissas59
64°F maximum daytime temperature in April in Galissas64
72°F maximum daytime temperature in May in Galissas72
79°F maximum daytime temperature in June in Galissas79
82°F maximum daytime temperature in July in Galissas82
81°F maximum daytime temperature in August in Galissas81
77°F maximum daytime temperature in September in Galissas77
70°F maximum daytime temperature in October in Galissas70
64°F maximum daytime temperature in November in Galissas64
59°F maximum daytime temperature in December in Galissas59
Min temperature (night-time)
46°F minimum night-time temperature in January in Galissas46
46°F minimum night-time temperature in February in Galissas46
48°F minimum night-time temperature in March in Galissas48
54°F minimum night-time temperature in April in Galissas54
59°F minimum night-time temperature in May in Galissas59
66°F minimum night-time temperature in June in Galissas66
72°F minimum night-time temperature in July in Galissas72
70°F minimum night-time temperature in August in Galissas70
66°F minimum night-time temperature in September in Galissas66
61°F minimum night-time temperature in October in Galissas61
55°F minimum night-time temperature in November in Galissas55
50°F minimum night-time temperature in December in Galissas50
Heat & Humidity
No heat & humidity in January in Galissas0
No heat & humidity in February in Galissas0
No heat & humidity in March in Galissas0
No heat & humidity in April in Galissas0
No heat & humidity in May in Galissas0
Low heat & humidity in June in GalissasL
Moderate heat & humidity in July in GalissasM
Moderate heat & humidity in August in GalissasM
Low heat & humidity in September in GalissasL
No heat & humidity in October in Galissas0
No heat & humidity in November in Galissas0
No heat & humidity in December in Galissas0
Sea temperature
59°F sea temperature in January in Galissas59
59°F sea temperature in February in Galissas59
59°F sea temperature in March in Galissas59
61°F sea temperature in April in Galissas61
64°F sea temperature in May in Galissas64
72°F sea temperature in June in Galissas72
73°F sea temperature in July in Galissas73
75°F sea temperature in August in Galissas75
73°F sea temperature in September in Galissas73
70°F sea temperature in October in Galissas70
64°F sea temperature in November in Galissas64
61°F sea temperature in December in Galissas61

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & UV index in Galissas

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
10 hours of daylight per day in January in Galissas10
11 hours of daylight per day in February in Galissas11
12 hours of daylight per day in March in Galissas12
13 hours of daylight per day in April in Galissas13
14 hours of daylight per day in May in Galissas14
15 hours of daylight per day in June in Galissas15
14 hours of daylight per day in July in Galissas14
14 hours of daylight per day in August in Galissas14
12 hours of daylight per day in September in Galissas12
11 hours of daylight per day in October in Galissas11
10 hours of daylight per day in November in Galissas10
10 hours of daylight per day in December in Galissas10
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in Galissas2
UV (maximum) index 3 (Moderate) in February in Galissas3
UV (maximum) index 5 (Moderate) in March in Galissas5
UV (maximum) index 6 (High) in April in Galissas6
UV (maximum) index 8 (Very High) in May in Galissas8
UV (maximum) index 9 (Very High) in June in Galissas9
UV (maximum) index 10 (Very High) in July in Galissas10
UV (maximum) index 9 (Very High) in August in Galissas9
UV (maximum) index 7 (High) in September in Galissas7
UV (maximum) index 5 (Moderate) in October in Galissas5
UV (maximum) index 3 (Moderate) in November in Galissas3
UV (maximum) index 2 (Low) in December in Galissas2

Rainfall in Galissas

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
10 days with some rainfall in January in Galissas10
9 days with some rainfall in February in Galissas9
8 days with some rainfall in March in Galissas8
6 days with some rainfall in April in Galissas6
3 days with some rainfall in May in Galissas3
1 day with some rainfall in June in Galissas1
1 day with some rainfall in July in Galissas1
1 day with some rainfall in August in Galissas1
1 day with some rainfall in September in Galissas1
4 days with some rainfall in October in Galissas4
8 days with some rainfall in November in Galissas8
11 days with some rainfall in December in Galissas11
Average monthly rainfall (inches)
3.5 inches monthly rainfall in January in Galissas3.5
2.5 inches monthly rainfall in February in Galissas2.5
2.2 inches monthly rainfall in March in Galissas2.2
1.0 inches monthly rainfall in April in Galissas1.0
0.6 inches monthly rainfall in May in Galissas0.6
0.2 inches monthly rainfall in June in Galissas0.2
0.1 inches monthly rainfall in July in Galissas0.1
0.1 inches monthly rainfall in August in Galissas0.1
0.5 inches monthly rainfall in September in Galissas0.5
1.9 inches monthly rainfall in October in Galissas1.9
2.5 inches monthly rainfall in November in Galissas2.5
3.6 inches monthly rainfall in December in Galissas3.6

More about Galissas

Galissas by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Syros

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The climate guide for Syros, represented by Galissas, (Galissas) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Galissas?

Galissas has a temperate climate with hot dry summers.

Galissas weather in January

Expect daytime maximum temperatures of 55°F in Galissas, Syros in January based on long-term weather averages. There are 4 hours of sunshine per day on average with 10 days with some rainfall and typically 3.5 inches of rainfall in the month.

  • 55°F maximum daytime temperature in January in Galissas55
    55°F max day temperature
  • 4 hours of sunshine per day
  • 10 days with some rainfall in January in Galissas10
    10 days with some rainfall
  • 46°F minimum night-time temperature in January in Galissas46
    46°F min night temperature
  • 10 hours of daylight per day in January in Galissas10
    10 hours of daylight per day
  • No heat & humidity in January in Galissas0
    No heat & humidity
  • 3.5 inches monthly rainfall in January in Galissas3.5
    3.5 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in January in Galissas2
    2 (Low) UV index
  • 59°F sea temperature in January in Galissas59
    59°F sea temperature

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Galissas weather in February

Expect daytime maximum temperatures of 55°F in Galissas, Syros in February based on long-term weather averages. There are 5 hours of sunshine per day on average with typically 2.5 inches of rainfall in the month.

  • 55°F maximum daytime temperature in February in Galissas55
    55°F max day temperature
  • 5 hours of sunshine per day
  • 9 days with some rainfall in February in Galissas9
    9 days with some rainfall
  • 46°F minimum night-time temperature in February in Galissas46
    46°F min night temperature
  • 11 hours of daylight per day in February in Galissas11
    11 hours of daylight per day
  • No heat & humidity in February in Galissas0
    No heat & humidity
  • 2.5 inches monthly rainfall in February in Galissas2.5
    2.5 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in February in Galissas3
    3 (Moderate) UV index
  • 59°F sea temperature in February in Galissas59
    59°F sea temperature

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Galissas weather in March

Expect daytime maximum temperatures of 59°F in Galissas, Syros in March based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 2.2 inches of rainfall in the month.

  • 59°F maximum daytime temperature in March in Galissas59
    59°F max day temperature
  • 7 hours of sunshine per day
  • 8 days with some rainfall in March in Galissas8
    8 days with some rainfall
  • 48°F minimum night-time temperature in March in Galissas48
    48°F min night temperature
  • 12 hours of daylight per day in March in Galissas12
    12 hours of daylight per day
  • No heat & humidity in March in Galissas0
    No heat & humidity
  • 2.2 inches monthly rainfall in March in Galissas2.2
    2.2 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in March in Galissas5
    5 (Moderate) UV index
  • 59°F sea temperature in March in Galissas59
    59°F sea temperature

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Galissas weather in April

Expect daytime maximum temperatures of 64°F in Galissas, Syros in April based on long-term weather averages. There are 8 hours of sunshine per day on average.

  • 64°F maximum daytime temperature in April in Galissas64
    64°F max day temperature
  • 8 hours of sunshine per day
  • 6 days with some rainfall in April in Galissas6
    6 days with some rainfall
  • 54°F minimum night-time temperature in April in Galissas54
    54°F min night temperature
  • 13 hours of daylight per day in April in Galissas13
    13 hours of daylight per day
  • No heat & humidity in April in Galissas0
    No heat & humidity
  • 1.0 inches monthly rainfall in April in Galissas1.0
    1.0 inches of monthly rainfall
  • UV (maximum) index 6 (High) in April in Galissas6
    6 (High) UV index
  • 61°F sea temperature in April in Galissas61
    61°F sea temperature

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Galissas weather in May

Expect daytime maximum temperatures of 72°F in Galissas, Syros in May based on long-term weather averages. There are 10 hours of sunshine per day on average.

  • 72°F maximum daytime temperature in May in Galissas72
    72°F max day temperature
  • 10 hours of sunshine per day
  • 3 days with some rainfall in May in Galissas3
    3 days with some rainfall
  • 59°F minimum night-time temperature in May in Galissas59
    59°F min night temperature
  • 14 hours of daylight per day in May in Galissas14
    14 hours of daylight per day
  • No heat & humidity in May in Galissas0
    No heat & humidity
  • 0.6 inches monthly rainfall in May in Galissas0.6
    0.6 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in Galissas8
    8 (Very High) UV index
  • 64°F sea temperature in May in Galissas64
    64°F sea temperature

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Galissas weather in June

Expect daytime maximum temperatures of 79°F in Galissas, Syros in June based on long-term weather averages. There are 13 hours of sunshine per day on average.

  • 79°F maximum daytime temperature in June in Galissas79
    79°F max day temperature
  • 13 hours of sunshine per day
  • 1 day with some rainfall in June in Galissas1
    1 day with some rainfall
  • 66°F minimum night-time temperature in June in Galissas66
    66°F min night temperature
  • 15 hours of daylight per day in June in Galissas15
    15 hours of daylight per day
  • Low heat & humidity in June in GalissasL
    Low heat & humidity
  • 0.2 inches monthly rainfall in June in Galissas0.2
    0.2 inches of monthly rainfall
  • UV (maximum) index 9 (Very High) in June in Galissas9
    9 (Very High) UV index
  • 72°F sea temperature in June in Galissas72
    72°F sea temperature

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Galissas weather in July

Expect daytime maximum temperatures of 82°F in Galissas, Syros in July based on long-term weather averages. There are 14 hours of sunshine per day on average.

  • 82°F maximum daytime temperature in July in Galissas82
    82°F max day temperature
  • 14 hours of sunshine per day
  • 1 day with some rainfall in July in Galissas1
    1 day with some rainfall
  • 72°F minimum night-time temperature in July in Galissas72
    72°F min night temperature
  • 14 hours of daylight per day in July in Galissas14
    14 hours of daylight per day
  • Moderate heat & humidity in July in GalissasM
    Moderate heat & humidity
  • 0.1 inches monthly rainfall in July in Galissas0.1
    0.1 inches of monthly rainfall
  • UV (maximum) index 10 (Very High) in July in Galissas10
    10 (Very High) UV index
  • 73°F sea temperature in July in Galissas73
    73°F sea temperature

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Galissas weather in August

Expect daytime maximum temperatures of 81°F in Galissas, Syros in August based on long-term weather averages. There are 13 hours of sunshine per day on average.

  • 81°F maximum daytime temperature in August in Galissas81
    81°F max day temperature
  • 13 hours of sunshine per day
  • 1 day with some rainfall in August in Galissas1
    1 day with some rainfall
  • 70°F minimum night-time temperature in August in Galissas70
    70°F min night temperature
  • 14 hours of daylight per day in August in Galissas14
    14 hours of daylight per day
  • Moderate heat & humidity in August in GalissasM
    Moderate heat & humidity
  • 0.1 inches monthly rainfall in August in Galissas0.1
    0.1 inches of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Galissas9
    9 (Very High) UV index
  • 75°F sea temperature in August in Galissas75
    75°F sea temperature

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Galissas weather in September

Expect daytime maximum temperatures of 77°F in Galissas, Syros in September based on long-term weather averages. There are 10 hours of sunshine per day on average.

  • 77°F maximum daytime temperature in September in Galissas77
    77°F max day temperature
  • 10 hours of sunshine per day
  • 1 day with some rainfall in September in Galissas1
    1 day with some rainfall
  • 66°F minimum night-time temperature in September in Galissas66
    66°F min night temperature
  • 12 hours of daylight per day in September in Galissas12
    12 hours of daylight per day
  • Low heat & humidity in September in GalissasL
    Low heat & humidity
  • 0.5 inches monthly rainfall in September in Galissas0.5
    0.5 inches of monthly rainfall
  • UV (maximum) index 7 (High) in September in Galissas7
    7 (High) UV index
  • 73°F sea temperature in September in Galissas73
    73°F sea temperature

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Galissas weather in October

Expect daytime maximum temperatures of 70°F in Galissas, Syros in October based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 1.9 inches of rainfall in the month.

  • 70°F maximum daytime temperature in October in Galissas70
    70°F max day temperature
  • 7 hours of sunshine per day
  • 4 days with some rainfall in October in Galissas4
    4 days with some rainfall
  • 61°F minimum night-time temperature in October in Galissas61
    61°F min night temperature
  • 11 hours of daylight per day in October in Galissas11
    11 hours of daylight per day
  • No heat & humidity in October in Galissas0
    No heat & humidity
  • 1.9 inches monthly rainfall in October in Galissas1.9
    1.9 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in October in Galissas5
    5 (Moderate) UV index
  • 70°F sea temperature in October in Galissas70
    70°F sea temperature

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Galissas weather in November

Expect daytime maximum temperatures of 64°F in Galissas, Syros in November based on long-term weather averages. There are 5 hours of sunshine per day on average with typically 2.5 inches of rainfall in the month.

  • 64°F maximum daytime temperature in November in Galissas64
    64°F max day temperature
  • 5 hours of sunshine per day
  • 8 days with some rainfall in November in Galissas8
    8 days with some rainfall
  • 55°F minimum night-time temperature in November in Galissas55
    55°F min night temperature
  • 10 hours of daylight per day in November in Galissas10
    10 hours of daylight per day
  • No heat & humidity in November in Galissas0
    No heat & humidity
  • 2.5 inches monthly rainfall in November in Galissas2.5
    2.5 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in November in Galissas3
    3 (Moderate) UV index
  • 64°F sea temperature in November in Galissas64
    64°F sea temperature

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Galissas weather in December

Expect daytime maximum temperatures of 59°F in Galissas, Syros in December based on long-term weather averages. There are 4 hours of sunshine per day on average with 11 days with some rainfall and typically 3.6 inches of rainfall in the month.

  • 59°F maximum daytime temperature in December in Galissas59
    59°F max day temperature
  • 4 hours of sunshine per day
  • 11 days with some rainfall in December in Galissas11
    11 days with some rainfall
  • 50°F minimum night-time temperature in December in Galissas50
    50°F min night temperature
  • 10 hours of daylight per day in December in Galissas10
    10 hours of daylight per day
  • No heat & humidity in December in Galissas0
    No heat & humidity
  • 3.6 inches monthly rainfall in December in Galissas3.6
    3.6 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in December in Galissas2
    2 (Low) UV index
  • 61°F sea temperature in December in Galissas61
    61°F sea temperature

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More about Galissas

Galissas by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Syros

  • Search for activities & tours across Greece
  • Enjoy authentic experiences & action packed adventures
  • Pick from over 2,500 activities from a wide range of categories

The climate guide for Syros, represented by Galissas, (Galissas) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Compare Galissas weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for Galissas, Syros, Greece and the UK (London).

Maximum daytime temperature (°F)

Galissas, Syros, Greece
UK (London)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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