Chiang Rai weather by month

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

Temperature in Chiang Rai (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
27°C maximum daytime temperature in January in Chiang Rai27
31°C maximum daytime temperature in February in Chiang Rai31
33°C maximum daytime temperature in March in Chiang Rai33
34°C maximum daytime temperature in April in Chiang Rai34
33°C maximum daytime temperature in May in Chiang Rai33
31°C maximum daytime temperature in June in Chiang Rai31
31°C maximum daytime temperature in July in Chiang Rai31
30°C maximum daytime temperature in August in Chiang Rai30
30°C maximum daytime temperature in September in Chiang Rai30
29°C maximum daytime temperature in October in Chiang Rai29
28°C maximum daytime temperature in November in Chiang Rai28
26°C maximum daytime temperature in December in Chiang Rai26
Min temperature (night-time)
12°C minimum night-time temperature in January in Chiang Rai12
13°C minimum night-time temperature in February in Chiang Rai13
16°C minimum night-time temperature in March in Chiang Rai16
20°C minimum night-time temperature in April in Chiang Rai20
22°C minimum night-time temperature in May in Chiang Rai22
23°C minimum night-time temperature in June in Chiang Rai23
23°C minimum night-time temperature in July in Chiang Rai23
22°C minimum night-time temperature in August in Chiang Rai22
22°C minimum night-time temperature in September in Chiang Rai22
20°C minimum night-time temperature in October in Chiang Rai20
17°C minimum night-time temperature in November in Chiang Rai17
12°C minimum night-time temperature in December in Chiang Rai12
Heat & Humidity
Low heat & humidity in January in Chiang RaiL
Moderate heat & humidity in February in Chiang RaiM
High heat & humidity in March in Chiang RaiH
Very high heat & humidity in April in Chiang RaiVH
Very high heat & humidity in May in Chiang RaiVH
Very high heat & humidity in June in Chiang RaiVH
High heat & humidity in July in Chiang RaiH
High heat & humidity in August in Chiang RaiH
High heat & humidity in September in Chiang RaiH
High heat & humidity in October in Chiang RaiH
Moderate heat & humidity in November in Chiang RaiM
Low heat & humidity in December in Chiang RaiL

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

Sunshine & UV index in Chiang Rai

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
11 hours of daylight per day in January in Chiang Rai11
11 hours of daylight per day in February in Chiang Rai11
12 hours of daylight per day in March in Chiang Rai12
13 hours of daylight per day in April in Chiang Rai13
13 hours of daylight per day in May in Chiang Rai13
13 hours of daylight per day in June in Chiang Rai13
13 hours of daylight per day in July in Chiang Rai13
13 hours of daylight per day in August in Chiang Rai13
12 hours of daylight per day in September in Chiang Rai12
12 hours of daylight per day in October in Chiang Rai12
11 hours of daylight per day in November in Chiang Rai11
11 hours of daylight per day in December in Chiang Rai11
UV Index (Maximum)
UV (maximum) index 8 (Very High) in January in Chiang Rai8
UV (maximum) index 10 (Very High) in February in Chiang Rai10
UV (maximum) index 11+ (Extreme) in March in Chiang Rai11
UV (maximum) index 11+ (Extreme) in April in Chiang Rai11
UV (maximum) index 11+ (Extreme) in May in Chiang Rai11
UV (maximum) index 11+ (Extreme) in June in Chiang Rai11
UV (maximum) index 11+ (Extreme) in July in Chiang Rai11
UV (maximum) index 11+ (Extreme) in August in Chiang Rai11
UV (maximum) index 11+ (Extreme) in September in Chiang Rai11
UV (maximum) index 10 (Very High) in October in Chiang Rai10
UV (maximum) index 8 (Very High) in November in Chiang Rai8
UV (maximum) index 7 (High) in December in Chiang Rai7

Rainfall in Chiang Rai

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
2 days with some rainfall in January in Chiang Rai2
1 day with some rainfall in February in Chiang Rai1
3 days with some rainfall in March in Chiang Rai3
10 days with some rainfall in April in Chiang Rai10
17 days with some rainfall in May in Chiang Rai17
19 days with some rainfall in June in Chiang Rai19
22 days with some rainfall in July in Chiang Rai22
24 days with some rainfall in August in Chiang Rai24
18 days with some rainfall in September in Chiang Rai18
12 days with some rainfall in October in Chiang Rai12
6 days with some rainfall in November in Chiang Rai6
3 days with some rainfall in December in Chiang Rai3
Average monthly rainfall (mm)
14 mm monthly rainfall in January in Chiang Rai14
8 mm monthly rainfall in February in Chiang Rai8
21 mm monthly rainfall in March in Chiang Rai21
81 mm monthly rainfall in April in Chiang Rai81
202 mm monthly rainfall in May in Chiang Rai202
216 mm monthly rainfall in June in Chiang Rai216
295 mm monthly rainfall in July in Chiang Rai295
386 mm monthly rainfall in August in Chiang Rai386
258 mm monthly rainfall in September in Chiang Rai258
135 mm monthly rainfall in October in Chiang Rai135
55 mm monthly rainfall in November in Chiang Rai55
23 mm monthly rainfall in December in Chiang Rai23

More about Chiang Rai

Chiang Rai by month

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

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The climate guide for Thailand (Chiang Rai) 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 Chiang Rai?

Chiang Rai has a hot tropical climate with a winter dry season.

Chiang Rai weather in January

Expect daytime maximum temperatures of 27°C in Chiang Rai, Thailand in January based on long-term weather averages. There are 8 hours of sunshine per day on average.

  • 27°C maximum daytime temperature in January in Chiang Rai27
    27°C max day temperature
  • 8 hours of sunshine per day
  • 2 days with some rainfall in January in Chiang Rai2
    2 days with some rainfall
  • 12°C minimum night-time temperature in January in Chiang Rai12
    12°C min night temperature
  • 11 hours of daylight per day in January in Chiang Rai11
    11 hours of daylight per day
  • Low heat & humidity in January in Chiang RaiL
    Low heat & humidity
  • 14 mm monthly rainfall in January in Chiang Rai14
    14 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in January in Chiang Rai8
    8 (Very High) UV index

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Chiang Rai weather in February

Expect daytime maximum temperatures of 31°C in Chiang Rai, Thailand in February based on long-term weather averages. There are 9 hours of sunshine per day on average.

  • 31°C maximum daytime temperature in February in Chiang Rai31
    31°C max day temperature
  • 9 hours of sunshine per day
  • 1 day with some rainfall in February in Chiang Rai1
    1 day with some rainfall
  • 13°C minimum night-time temperature in February in Chiang Rai13
    13°C min night temperature
  • 11 hours of daylight per day in February in Chiang Rai11
    11 hours of daylight per day
  • Moderate heat & humidity in February in Chiang RaiM
    Moderate heat & humidity
  • 8 mm monthly rainfall in February in Chiang Rai8
    8 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in February in Chiang Rai10
    10 (Very High) UV index

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Chiang Rai weather in March

Expect daytime maximum temperatures of 33°C in Chiang Rai, Thailand in March and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average.

  • 33°C maximum daytime temperature in March in Chiang Rai33
    33°C max day temperature
  • 8 hours of sunshine per day
  • 3 days with some rainfall in March in Chiang Rai3
    3 days with some rainfall
  • 16°C minimum night-time temperature in March in Chiang Rai16
    16°C min night temperature
  • 12 hours of daylight per day in March in Chiang Rai12
    12 hours of daylight per day
  • High heat & humidity in March in Chiang RaiH
    High heat & humidity
  • 21 mm monthly rainfall in March in Chiang Rai21
    21 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in March in Chiang Rai11
    11+ (Extreme) UV index

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Chiang Rai weather in April

Expect daytime maximum temperatures of 34°C in Chiang Rai, Thailand in April and very high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 10 days with some rainfall and typically 81 mm of rainfall in the month.

  • 34°C maximum daytime temperature in April in Chiang Rai34
    34°C max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in April in Chiang Rai10
    10 days with some rainfall
  • 20°C minimum night-time temperature in April in Chiang Rai20
    20°C min night temperature
  • 13 hours of daylight per day in April in Chiang Rai13
    13 hours of daylight per day
  • Very high heat & humidity in April in Chiang RaiVH
    Very High heat & humidity
  • 81 mm monthly rainfall in April in Chiang Rai81
    81 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in April in Chiang Rai11
    11+ (Extreme) UV index

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Chiang Rai weather in May

Expect daytime maximum temperatures of 33°C in Chiang Rai, Thailand in May and very high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 17 days with some rainfall and typically 202 mm of rainfall in the month.

  • 33°C maximum daytime temperature in May in Chiang Rai33
    33°C max day temperature
  • 7 hours of sunshine per day
  • 17 days with some rainfall in May in Chiang Rai17
    17 days with some rainfall
  • 22°C minimum night-time temperature in May in Chiang Rai22
    22°C min night temperature
  • 13 hours of daylight per day in May in Chiang Rai13
    13 hours of daylight per day
  • Very high heat & humidity in May in Chiang RaiVH
    Very High heat & humidity
  • 202 mm monthly rainfall in May in Chiang Rai202
    202 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in May in Chiang Rai11
    11+ (Extreme) UV index

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Chiang Rai weather in June

Expect daytime maximum temperatures of 31°C in Chiang Rai, Thailand in June and very high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 19 days with some rainfall and typically 216 mm of rainfall in the month.

  • 31°C maximum daytime temperature in June in Chiang Rai31
    31°C max day temperature
  • 5 hours of sunshine per day
  • 19 days with some rainfall in June in Chiang Rai19
    19 days with some rainfall
  • 23°C minimum night-time temperature in June in Chiang Rai23
    23°C min night temperature
  • 13 hours of daylight per day in June in Chiang Rai13
    13 hours of daylight per day
  • Very high heat & humidity in June in Chiang RaiVH
    Very High heat & humidity
  • 216 mm monthly rainfall in June in Chiang Rai216
    216 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in June in Chiang Rai11
    11+ (Extreme) UV index

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Chiang Rai weather in July

Expect daytime maximum temperatures of 31°C in Chiang Rai, Thailand in July and high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 22 days with some rainfall and typically 295 mm of rainfall in the month.

  • 31°C maximum daytime temperature in July in Chiang Rai31
    31°C max day temperature
  • 5 hours of sunshine per day
  • 22 days with some rainfall in July in Chiang Rai22
    22 days with some rainfall
  • 23°C minimum night-time temperature in July in Chiang Rai23
    23°C min night temperature
  • 13 hours of daylight per day in July in Chiang Rai13
    13 hours of daylight per day
  • High heat & humidity in July in Chiang RaiH
    High heat & humidity
  • 295 mm monthly rainfall in July in Chiang Rai295
    295 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in July in Chiang Rai11
    11+ (Extreme) UV index

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Chiang Rai weather in August

Expect daytime maximum temperatures of 30°C in Chiang Rai, Thailand in August and high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 24 days with some rainfall and typically 386 mm of rainfall in the month.

  • 30°C maximum daytime temperature in August in Chiang Rai30
    30°C max day temperature
  • 5 hours of sunshine per day
  • 24 days with some rainfall in August in Chiang Rai24
    24 days with some rainfall
  • 22°C minimum night-time temperature in August in Chiang Rai22
    22°C min night temperature
  • 13 hours of daylight per day in August in Chiang Rai13
    13 hours of daylight per day
  • High heat & humidity in August in Chiang RaiH
    High heat & humidity
  • 386 mm monthly rainfall in August in Chiang Rai386
    386 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in Chiang Rai11
    11+ (Extreme) UV index

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Chiang Rai weather in September

Expect daytime maximum temperatures of 30°C in Chiang Rai, Thailand in September and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 18 days with some rainfall and typically 258 mm of rainfall in the month.

  • 30°C maximum daytime temperature in September in Chiang Rai30
    30°C max day temperature
  • 6 hours of sunshine per day
  • 18 days with some rainfall in September in Chiang Rai18
    18 days with some rainfall
  • 22°C minimum night-time temperature in September in Chiang Rai22
    22°C min night temperature
  • 12 hours of daylight per day in September in Chiang Rai12
    12 hours of daylight per day
  • High heat & humidity in September in Chiang RaiH
    High heat & humidity
  • 258 mm monthly rainfall in September in Chiang Rai258
    258 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Chiang Rai11
    11+ (Extreme) UV index

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Chiang Rai weather in October

Expect daytime maximum temperatures of 29°C in Chiang Rai, Thailand in October and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall and typically 135 mm of rainfall in the month.

  • 29°C maximum daytime temperature in October in Chiang Rai29
    29°C max day temperature
  • 7 hours of sunshine per day
  • 12 days with some rainfall in October in Chiang Rai12
    12 days with some rainfall
  • 20°C minimum night-time temperature in October in Chiang Rai20
    20°C min night temperature
  • 12 hours of daylight per day in October in Chiang Rai12
    12 hours of daylight per day
  • High heat & humidity in October in Chiang RaiH
    High heat & humidity
  • 135 mm monthly rainfall in October in Chiang Rai135
    135 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in October in Chiang Rai10
    10 (Very High) UV index

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Chiang Rai weather in November

Expect daytime maximum temperatures of 28°C in Chiang Rai, Thailand in November based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 55 mm of rainfall in the month.

  • 28°C maximum daytime temperature in November in Chiang Rai28
    28°C max day temperature
  • 7 hours of sunshine per day
  • 6 days with some rainfall in November in Chiang Rai6
    6 days with some rainfall
  • 17°C minimum night-time temperature in November in Chiang Rai17
    17°C min night temperature
  • 11 hours of daylight per day in November in Chiang Rai11
    11 hours of daylight per day
  • Moderate heat & humidity in November in Chiang RaiM
    Moderate heat & humidity
  • 55 mm monthly rainfall in November in Chiang Rai55
    55 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in November in Chiang Rai8
    8 (Very High) UV index

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Chiang Rai weather in December

Expect daytime maximum temperatures of 26°C in Chiang Rai, Thailand in December based on long-term weather averages. There are 7 hours of sunshine per day on average.

  • 26°C maximum daytime temperature in December in Chiang Rai26
    26°C max day temperature
  • 7 hours of sunshine per day
  • 3 days with some rainfall in December in Chiang Rai3
    3 days with some rainfall
  • 12°C minimum night-time temperature in December in Chiang Rai12
    12°C min night temperature
  • 11 hours of daylight per day in December in Chiang Rai11
    11 hours of daylight per day
  • Low heat & humidity in December in Chiang RaiL
    Low heat & humidity
  • 23 mm monthly rainfall in December in Chiang Rai23
    23 mm of monthly rainfall
  • UV (maximum) index 7 (High) in December in Chiang Rai7
    7 (High) UV index

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More about Chiang Rai

Chiang Rai by month

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

Recommended for Thailand

  • Explore latest special offers & online deals from TUI
  • Free child places & £0 deposits with direct debit available
  • Book summer & winter sun holidays in 2026/2027

TUITUI deal finder

The climate guide for Thailand (Chiang Rai) 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 Chiang Rai weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for Chiang Rai, Thailand and the UK (London).

Maximum daytime temperature (°C)

Chiang Rai, Thailand
UK (London)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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