St Peter Port weather by month

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

Temperature
Rainfall
Sunshine & UV index

Temperature in St Peter Port (°F)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	48	46	50	54	59	63	66	68	64	59	54	50
Min temperature (night-time)	41	39	41	43	48	52	55	57	55	52	45	43
Heat & Humidity	0	0	0	0	0	0	0	0	0	0	0	0
Sea temperature	50	48	48	50	52	55	59	63	63	61	57	54

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

Sunshine & UV index in St Peter Port

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daily hours of sunshine	2	3	4	6	8	8	8	7	6	4	2	2
Daily hours of daylight	9	10	12	14	15	16	16	14	13	11	9	8
UV Index (Maximum)	1	2	3	4	6	7	7	6	4	2	1	1

Rainfall in St Peter Port

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	20	16	16	13	13	11	10	11	13	15	18	19
Average monthly rainfall (inches)	3.6	3.0	2.6	1.9	1.9	1.7	1.5	1.8	2.5	3.2	3.9	3.9

More about St Peter Port

St Peter Port by month

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

Recommended for Guernsey

Fred Olsen: Top cruise offers for 2026/2027

Sale

Explore latest offers on Fred Olsen Cruises in 2026/2027
Find last minute deals or early bird discounts
Filter offers by price, destination, ship & departure point

Go to Fred Olsen deal >>

View all Fred Olsen offers

Cruise deal finder

Destination

The climate guide for Guernsey, represented by St Peter Port, (St Peter Port) 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 St Peter Port?

St Peter Port has a temperate climate with warm summers and some rainfall in all months.

St Peter Port weather in January

Expect daytime maximum temperatures of 48°F in St Peter Port, Guernsey in January based on long-term weather averages. There are 2 hours of sunshine per day on average with 20 days with some rainfall and typically 3.6 inches of rainfall in the month.

48
48°F max day temperature
2
2 hours of sunshine per day
20
20 days with some rainfall
41
41°F min night temperature
9
9 hours of daylight per day
0
No heat & humidity
3.6
3.6 inches of monthly rainfall
1
1 (Low) UV index
50
50°F sea temperature

Back to months

St Peter Port weather in February

Expect daytime maximum temperatures of 46°F in St Peter Port, Guernsey in February based on long-term weather averages. There are 3 hours of sunshine per day on average with 16 days with some rainfall and typically 3.0 inches of rainfall in the month.

46
46°F max day temperature
3
3 hours of sunshine per day
16
16 days with some rainfall
39
39°F min night temperature
10
10 hours of daylight per day
0
No heat & humidity
3.0
3.0 inches of monthly rainfall
2
2 (Low) UV index
48
48°F sea temperature

Back to months

St Peter Port weather in March

Expect daytime maximum temperatures of 50°F in St Peter Port, Guernsey in March based on long-term weather averages. There are 4 hours of sunshine per day on average with 16 days with some rainfall and typically 2.6 inches of rainfall in the month.

50
50°F max day temperature
4
4 hours of sunshine per day
16
16 days with some rainfall
41
41°F min night temperature
12
12 hours of daylight per day
0
No heat & humidity
2.6
2.6 inches of monthly rainfall
3
3 (Moderate) UV index
48
48°F sea temperature

Back to months

St Peter Port weather in April

Expect daytime maximum temperatures of 54°F in St Peter Port, Guernsey in April based on long-term weather averages. There are 6 hours of sunshine per day on average with 13 days with some rainfall and typically 1.9 inches of rainfall in the month.

54
54°F max day temperature
6
6 hours of sunshine per day
13
13 days with some rainfall
43
43°F min night temperature
14
14 hours of daylight per day
0
No heat & humidity
1.9
1.9 inches of monthly rainfall
4
4 (Moderate) UV index
50
50°F sea temperature

Back to months

St Peter Port weather in May

Expect daytime maximum temperatures of 59°F in St Peter Port, Guernsey in May based on long-term weather averages. There are 8 hours of sunshine per day on average with 13 days with some rainfall and typically 1.9 inches of rainfall in the month.

59
59°F max day temperature
8
8 hours of sunshine per day
13
13 days with some rainfall
48
48°F min night temperature
15
15 hours of daylight per day
0
No heat & humidity
1.9
1.9 inches of monthly rainfall
6
6 (High) UV index
52
52°F sea temperature

Back to months

St Peter Port weather in June

Expect daytime maximum temperatures of 63°F in St Peter Port, Guernsey in June based on long-term weather averages. There are 8 hours of sunshine per day on average with 11 days with some rainfall and typically 1.7 inches of rainfall in the month.

63
63°F max day temperature
8
8 hours of sunshine per day
11
11 days with some rainfall
52
52°F min night temperature
16
16 hours of daylight per day
0
No heat & humidity
1.7
1.7 inches of monthly rainfall
7
7 (High) UV index
55
55°F sea temperature

Back to months

St Peter Port weather in July

Expect daytime maximum temperatures of 66°F in St Peter Port, Guernsey in July based on long-term weather averages. There are 8 hours of sunshine per day on average with 10 days with some rainfall.

66
66°F max day temperature
8
8 hours of sunshine per day
10
10 days with some rainfall
55
55°F min night temperature
16
16 hours of daylight per day
0
No heat & humidity
1.5
1.5 inches of monthly rainfall
7
7 (High) UV index
59
59°F sea temperature

Back to months

St Peter Port weather in August

Expect daytime maximum temperatures of 68°F in St Peter Port, Guernsey in August based on long-term weather averages. There are 7 hours of sunshine per day on average with 11 days with some rainfall and typically 1.8 inches of rainfall in the month.

68
68°F max day temperature
7
7 hours of sunshine per day
11
11 days with some rainfall
57
57°F min night temperature
14
14 hours of daylight per day
0
No heat & humidity
1.8
1.8 inches of monthly rainfall
6
6 (High) UV index
63
63°F sea temperature

Back to months

St Peter Port weather in September

Expect daytime maximum temperatures of 64°F in St Peter Port, Guernsey in September based on long-term weather averages. There are 6 hours of sunshine per day on average with 13 days with some rainfall and typically 2.5 inches of rainfall in the month.

64
64°F max day temperature
6
6 hours of sunshine per day
13
13 days with some rainfall
55
55°F min night temperature
13
13 hours of daylight per day
0
No heat & humidity
2.5
2.5 inches of monthly rainfall
4
4 (Moderate) UV index
63
63°F sea temperature

Back to months

St Peter Port weather in October

Expect daytime maximum temperatures of 59°F in St Peter Port, Guernsey in October based on long-term weather averages. There are 4 hours of sunshine per day on average with 15 days with some rainfall and typically 3.2 inches of rainfall in the month.

59
59°F max day temperature
4
4 hours of sunshine per day
15
15 days with some rainfall
52
52°F min night temperature
11
11 hours of daylight per day
0
No heat & humidity
3.2
3.2 inches of monthly rainfall
2
2 (Low) UV index
61
61°F sea temperature

Back to months

St Peter Port weather in November

Expect daytime maximum temperatures of 54°F in St Peter Port, Guernsey in November based on long-term weather averages. There are 2 hours of sunshine per day on average with 18 days with some rainfall and typically 3.9 inches of rainfall in the month.

54
54°F max day temperature
2
2 hours of sunshine per day
18
18 days with some rainfall
45
45°F min night temperature
9
9 hours of daylight per day
0
No heat & humidity
3.9
3.9 inches of monthly rainfall
1
1 (Low) UV index
57
57°F sea temperature

Back to months

St Peter Port weather in December

Expect daytime maximum temperatures of 50°F in St Peter Port, Guernsey in December based on long-term weather averages. There are 2 hours of sunshine per day on average with 19 days with some rainfall and typically 3.9 inches of rainfall in the month.

50
50°F max day temperature
2
2 hours of sunshine per day
19
19 days with some rainfall
43
43°F min night temperature
8
8 hours of daylight per day
0
No heat & humidity
3.9
3.9 inches of monthly rainfall
1
1 (Low) UV index
54
54°F sea temperature

Back to months