Porthmadog weather by month

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

Temperature
Rainfall
Sunshine & UV index

Temperature in Porthmadog (°C)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	7	7	8	11	14	17	18	18	16	13	9	8
Min temperature (night-time)	2	1	2	4	6	9	11	11	9	7	4	3
Heat & Humidity	0	0	0	0	0	0	0	0	0	0	0	0
Sea temperature	7	7	7	9	12	14	16	17	16	14	11	9

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

Sunshine & UV index in Porthmadog

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daily hours of sunshine	1	2	3	5	6	6	5	5	4	3	2	1
Daily hours of daylight	8	10	12	14	16	17	16	15	13	11	9	8
UV Index (Maximum)	1	1	2	4	5	6	6	5	4	2	1	0

Rainfall in Porthmadog

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	21	16	18	15	16	14	13	16	16	18	20	20
Average monthly rainfall (mm)	180	122	141	99	96	98	101	135	151	184	198	202

More about Porthmadog

Porthmadog by month

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

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The climate guide for Wales (Porthmadog) 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 Porthmadog?

Porthmadog has a temperate climate with warm summers and some rainfall in all months.

Porthmadog weather in January

Expect daytime maximum temperatures of 7°C in Porthmadog, Wales in January based on long-term weather averages. There is 1 hour of sunshine per day on average with 21 days with some rainfall and typically 180 mm of rainfall in the month.

7
7°C max day temperature
1
1 hour of sunshine per day
21
21 days with some rainfall
2
2°C min night temperature
8
8 hours of daylight per day
0
No heat & humidity
180
180 mm of monthly rainfall
1
1 (Low) UV index
7
7°C sea temperature

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Porthmadog weather in February

Expect daytime maximum temperatures of 7°C in Porthmadog, Wales in February based on long-term weather averages. There are 2 hours of sunshine per day on average with 16 days with some rainfall and typically 122 mm of rainfall in the month.

7
7°C max day temperature
2
2 hours of sunshine per day
16
16 days with some rainfall
1
1°C min night temperature
10
10 hours of daylight per day
0
No heat & humidity
122
122 mm of monthly rainfall
1
1 (Low) UV index
7
7°C sea temperature

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Porthmadog weather in March

Expect daytime maximum temperatures of 8°C in Porthmadog, Wales in March based on long-term weather averages. There are 3 hours of sunshine per day on average with 18 days with some rainfall and typically 141 mm of rainfall in the month.

8
8°C max day temperature
3
3 hours of sunshine per day
18
18 days with some rainfall
2
2°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
141
141 mm of monthly rainfall
2
2 (Low) UV index
7
7°C sea temperature

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Porthmadog weather in April

Expect daytime maximum temperatures of 11°C in Porthmadog, Wales in April based on long-term weather averages. There are 5 hours of sunshine per day on average with 15 days with some rainfall and typically 99 mm of rainfall in the month.

11
11°C max day temperature
5
5 hours of sunshine per day
15
15 days with some rainfall
4
4°C min night temperature
14
14 hours of daylight per day
0
No heat & humidity
99
99 mm of monthly rainfall
4
4 (Moderate) UV index
9
9°C sea temperature

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Porthmadog weather in May

Expect daytime maximum temperatures of 14°C in Porthmadog, Wales in May based on long-term weather averages. There are 6 hours of sunshine per day on average with 16 days with some rainfall and typically 96 mm of rainfall in the month.

14
14°C max day temperature
6
6 hours of sunshine per day
16
16 days with some rainfall
6
6°C min night temperature
16
16 hours of daylight per day
0
No heat & humidity
96
96 mm of monthly rainfall
5
5 (Moderate) UV index
12
12°C sea temperature

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Porthmadog weather in June

Expect daytime maximum temperatures of 17°C in Porthmadog, Wales in June based on long-term weather averages. There are 6 hours of sunshine per day on average with 14 days with some rainfall and typically 98 mm of rainfall in the month.

17
17°C max day temperature
6
6 hours of sunshine per day
14
14 days with some rainfall
9
9°C min night temperature
17
17 hours of daylight per day
0
No heat & humidity
98
98 mm of monthly rainfall
6
6 (High) UV index
14
14°C sea temperature

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Porthmadog weather in July

Expect daytime maximum temperatures of 18°C in Porthmadog, Wales in July based on long-term weather averages. There are 5 hours of sunshine per day on average with 13 days with some rainfall and typically 101 mm of rainfall in the month.

18
18°C max day temperature
5
5 hours of sunshine per day
13
13 days with some rainfall
11
11°C min night temperature
16
16 hours of daylight per day
0
No heat & humidity
101
101 mm of monthly rainfall
6
6 (High) UV index
16
16°C sea temperature

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Porthmadog weather in August

Expect daytime maximum temperatures of 18°C in Porthmadog, Wales in August based on long-term weather averages. There are 5 hours of sunshine per day on average with 16 days with some rainfall and typically 135 mm of rainfall in the month.

18
18°C max day temperature
5
5 hours of sunshine per day
16
16 days with some rainfall
11
11°C min night temperature
15
15 hours of daylight per day
0
No heat & humidity
135
135 mm of monthly rainfall
5
5 (Moderate) UV index
17
17°C sea temperature

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Porthmadog weather in September

Expect daytime maximum temperatures of 16°C in Porthmadog, Wales in September based on long-term weather averages. There are 4 hours of sunshine per day on average with 16 days with some rainfall and typically 151 mm of rainfall in the month.

16
16°C max day temperature
4
4 hours of sunshine per day
16
16 days with some rainfall
9
9°C min night temperature
13
13 hours of daylight per day
0
No heat & humidity
151
151 mm of monthly rainfall
4
4 (Moderate) UV index
16
16°C sea temperature

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Porthmadog weather in October

Expect daytime maximum temperatures of 13°C in Porthmadog, Wales in October based on long-term weather averages. There are 3 hours of sunshine per day on average with 18 days with some rainfall and typically 184 mm of rainfall in the month.

13
13°C max day temperature
3
3 hours of sunshine per day
18
18 days with some rainfall
7
7°C min night temperature
11
11 hours of daylight per day
0
No heat & humidity
184
184 mm of monthly rainfall
2
2 (Low) UV index
14
14°C sea temperature

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Porthmadog weather in November

Expect daytime maximum temperatures of 9°C in Porthmadog, Wales in November based on long-term weather averages. There are 2 hours of sunshine per day on average with 20 days with some rainfall and typically 198 mm of rainfall in the month.

9
9°C max day temperature
2
2 hours of sunshine per day
20
20 days with some rainfall
4
4°C min night temperature
9
9 hours of daylight per day
0
No heat & humidity
198
198 mm of monthly rainfall
1
1 (Low) UV index
11
11°C sea temperature

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Porthmadog weather in December

Expect daytime maximum temperatures of 8°C in Porthmadog, Wales in December based on long-term weather averages. There is 1 hour of sunshine per day on average with 20 days with some rainfall and typically 202 mm of rainfall in the month.