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Colwyn Bay weather by month
Check out Colwyn Bay weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Colwyn Bay (°F)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max temperature (daytime) | 45 |
45 |
46 |
52 |
57 |
63 |
64 |
64 |
61 |
55 |
50 |
46 |
| Min temperature (night-time) | 36 |
34 |
37 |
39 |
43 |
48 |
52 |
52 |
50 |
45 |
39 |
37 |
| Heat & Humidity | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Sea temperature | 45 |
43 |
43 |
46 |
52 |
55 |
59 |
61 |
61 |
57 |
52 |
48 |
Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & UV index in Colwyn Bay
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daily hours of sunshine | ||||||||||||
| Daily hours of daylight | 8 |
10 |
12 |
14 |
16 |
17 |
16 |
15 |
13 |
11 |
9 |
8 |
| UV Index (Maximum) | 0 |
1 |
2 |
4 |
5 |
6 |
6 |
5 |
4 |
2 |
1 |
0 |
Rainfall in Colwyn Bay
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of days with some rain | 21 |
16 |
18 |
15 |
16 |
15 |
14 |
16 |
16 |
19 |
20 |
20 |
| Average monthly rainfall (inches) | 5.0 |
3.5 |
3.8 |
2.7 |
2.9 |
2.7 |
2.5 |
3.4 |
4.1 |
5.0 |
5.6 |
5.5 |
More about Colwyn Bay
Colwyn Bay by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Wales
Expires at 23:59 on Friday 20th Mar 2026 · View all Travelodge offers
The climate guide for Wales (Colwyn Bay) 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 Colwyn Bay?
Colwyn Bay has a temperate climate with warm summers and some rainfall in all months.
Colwyn Bay weather in January
Expect daytime maximum temperatures of 45°F in Colwyn Bay, Wales in January based on long-term weather averages. There are 2 hours of sunshine per day on average with 21 days with some rainfall and typically 5.0 inches of rainfall in the month.
- 45°F max day temperature
45 - 2 hours of sunshine per day
- 21 days with some rainfall
21 - 36°F min night temperature
36 - 8 hours of daylight per day
8 - No heat & humidity
0 - 5.0 inches of monthly rainfall
5.0 - No UV (Maximum) Index UV index
0 - 45°F sea temperature
45
Colwyn Bay weather in February
Expect daytime maximum temperatures of 45°F in Colwyn Bay, 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 3.5 inches of rainfall in the month.
- 45°F max day temperature
45 - 2 hours of sunshine per day
- 16 days with some rainfall
16 - 34°F min night temperature
34 - 10 hours of daylight per day
10 - No heat & humidity
0 - 3.5 inches of monthly rainfall
3.5 - 1 (Low) UV index
1 - 43°F sea temperature
43
Colwyn Bay weather in March
Expect daytime maximum temperatures of 46°F in Colwyn Bay, 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 3.8 inches of rainfall in the month.
- 46°F max day temperature
46 - 3 hours of sunshine per day
- 18 days with some rainfall
18 - 37°F min night temperature
37 - 12 hours of daylight per day
12 - No heat & humidity
0 - 3.8 inches of monthly rainfall
3.8 - 2 (Low) UV index
2 - 43°F sea temperature
43
Colwyn Bay weather in April
Expect daytime maximum temperatures of 52°F in Colwyn Bay, 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 2.7 inches of rainfall in the month.
- 52°F max day temperature
52 - 5 hours of sunshine per day
- 15 days with some rainfall
15 - 39°F min night temperature
39 - 14 hours of daylight per day
14 - No heat & humidity
0 - 2.7 inches of monthly rainfall
2.7 - 4 (Moderate) UV index
4 - 46°F sea temperature
46
Colwyn Bay weather in May
Expect daytime maximum temperatures of 57°F in Colwyn Bay, 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 2.9 inches of rainfall in the month.
- 57°F max day temperature
57 - 6 hours of sunshine per day
- 16 days with some rainfall
16 - 43°F min night temperature
43 - 16 hours of daylight per day
16 - No heat & humidity
0 - 2.9 inches of monthly rainfall
2.9 - 5 (Moderate) UV index
5 - 52°F sea temperature
52
Colwyn Bay weather in June
Expect daytime maximum temperatures of 63°F in Colwyn Bay, Wales in June based on long-term weather averages. There are 6 hours of sunshine per day on average with 15 days with some rainfall and typically 2.7 inches of rainfall in the month.
- 63°F max day temperature
63 - 6 hours of sunshine per day
- 15 days with some rainfall
15 - 48°F min night temperature
48 - 17 hours of daylight per day
17 - No heat & humidity
0 - 2.7 inches of monthly rainfall
2.7 - 6 (High) UV index
6 - 55°F sea temperature
55
Colwyn Bay weather in July
Expect daytime maximum temperatures of 64°F in Colwyn Bay, Wales in July based on long-term weather averages. There are 6 hours of sunshine per day on average with 14 days with some rainfall and typically 2.5 inches of rainfall in the month.
- 64°F max day temperature
64 - 6 hours of sunshine per day
- 14 days with some rainfall
14 - 52°F min night temperature
52 - 16 hours of daylight per day
16 - No heat & humidity
0 - 2.5 inches of monthly rainfall
2.5 - 6 (High) UV index
6 - 59°F sea temperature
59
Colwyn Bay weather in August
Expect daytime maximum temperatures of 64°F in Colwyn Bay, 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 3.4 inches of rainfall in the month.
- 64°F max day temperature
64 - 5 hours of sunshine per day
- 16 days with some rainfall
16 - 52°F min night temperature
52 - 15 hours of daylight per day
15 - No heat & humidity
0 - 3.4 inches of monthly rainfall
3.4 - 5 (Moderate) UV index
5 - 61°F sea temperature
61
Colwyn Bay weather in September
Expect daytime maximum temperatures of 61°F in Colwyn Bay, 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 4.1 inches of rainfall in the month.
- 61°F max day temperature
61 - 4 hours of sunshine per day
- 16 days with some rainfall
16 - 50°F min night temperature
50 - 13 hours of daylight per day
13 - No heat & humidity
0 - 4.1 inches of monthly rainfall
4.1 - 4 (Moderate) UV index
4 - 61°F sea temperature
61
Colwyn Bay weather in October
Expect daytime maximum temperatures of 55°F in Colwyn Bay, Wales in October based on long-term weather averages. There are 3 hours of sunshine per day on average with 19 days with some rainfall and typically 5.0 inches of rainfall in the month.
- 55°F max day temperature
55 - 3 hours of sunshine per day
- 19 days with some rainfall
19 - 45°F min night temperature
45 - 11 hours of daylight per day
11 - No heat & humidity
0 - 5.0 inches of monthly rainfall
5.0 - 2 (Low) UV index
2 - 57°F sea temperature
57
Colwyn Bay weather in November
Expect daytime maximum temperatures of 50°F in Colwyn Bay, 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 5.6 inches of rainfall in the month.
- 50°F max day temperature
50 - 2 hours of sunshine per day
- 20 days with some rainfall
20 - 39°F min night temperature
39 - 9 hours of daylight per day
9 - No heat & humidity
0 - 5.6 inches of monthly rainfall
5.6 - 1 (Low) UV index
1 - 52°F sea temperature
52
Colwyn Bay weather in December
Expect daytime maximum temperatures of 46°F in Colwyn Bay, 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 5.5 inches of rainfall in the month.
- 46°F max day temperature
46 - 1 hour of sunshine per day
- 20 days with some rainfall
20 - 37°F min night temperature
37 - 8 hours of daylight per day
8 - No heat & humidity
0 - 5.5 inches of monthly rainfall
5.5 - No UV (Maximum) Index UV index
0 - 48°F sea temperature
48
More about Colwyn Bay
Colwyn Bay by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Wales
- Book hotels in the UK for £35 or less (London from £49)
- Prices based on lowest saver room rates. T&Cs apply
- Travel before 20th March 2026 (inclusive)
Expires at 23:59 on Friday 20th Mar 2026 · View all Travelodge offers
The climate guide for Wales (Colwyn Bay) 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.
Metric (°C) | Imperial (°F)
Compare Colwyn Bay weather with the UK
The weather chart below compares the average monthly maximum daytime temperature for Colwyn Bay, Conwy, Wales and the UK (London).
Maximum daytime temperature (°F)
Metric (°C) | Imperial (°F)
More about Wales
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