Bangor weather forecast
UK towns · Gwynedd, Wales · 53.23°N 4.13°W
Bangor, in Gwynedd, Wales, has its warmest weather in August, when daytime temperatures average 18.7°C, while January nights are the coldest at around 4.4°C. The town sees roughly 1520mm of rain a year; December is normally the wettest month and April the driest. Figures are averaged from 2020–2024 observations.
Climate averages
| Month | Avg high | Avg low | Rain | Rain days |
|---|---|---|---|---|
| Jan | 8° | 4.4° | 152mm | 20 |
| Feb | 9° | 4.9° | 153mm | 19 |
| Mar | 10° | 4.7° | 120mm | 18 |
| Apr | 11.9° | 5.9° | 69mm | 13 |
| May | 14.9° | 9.1° | 93mm | 16 |
| Jun | 17.5° | 11.7° | 89mm | 17 |
| Jul | 18.4° | 13.3° | 113mm | 21 |
| Aug | 18.7° | 13.8° | 117mm | 18 |
| Sep | 17.5° | 12.6° | 128mm | 18 |
| Oct | 14.3° | 10.2° | 169mm | 22 |
| Nov | 11.2° | 7.3° | 133mm | 19 |
| Dec | 8.8° | 5.2° | 184mm | 22 |
Seasons in Bangor
Spring (March–May). Daytime highs in Bangor climb from 10°C in March to 14.9°C by May, while nights ease from 4.7°C to 9.1°C. The season brings around 282mm of rain in total.
Summer (June–August). The warmest stretch of the year: afternoons average 18.2°C, peaking in August at 18.7°C. June is usually the driest of the summer months (89mm over ~17 rainy days). Around the June solstice, Bangor gets roughly 16.7 hours of daylight.
Autumn (September–November). Daytime temperatures fall from 17.5°C in September to 11.2°C by November, with around 430mm of rain across the season.
Winter (December–February). Nights average 4.8°C, with January the coldest month (average low 4.4°C, daytime high 8°C). Expect about 61 days with measurable rain over the three months, and only around 7.3 hours of daylight in mid-December.
How Bangor compares
| Bangor | UK town average | |
|---|---|---|
| Annual rainfall | 1520mm | 1054mm |
| Rainy days per year | 223 | 167 |
| Summer daytime high | 18.2°C | 19.7°C |
| Winter night low | 4.8°C | 3.4°C |
Bangor is about 44% wetter than the average for the 121 UK towns tracked on this site (1054mm), based on 2020–2024 monthly normals.
Bangor weather FAQs
What is the warmest month in Bangor?
August is typically the warmest month in Bangor, with average daytime highs of 18.7°C. Summer afternoons (June–August) average around 18.2°C.
What is the wettest month in Bangor?
December is usually the wettest month, with around 184mm of rain over roughly 22 rainy days. April is typically the driest (69mm).
How much does it rain in Bangor per year?
Bangor receives roughly 1520mm of precipitation per year, spread over about 223 days with at least 1mm of rain (based on 2020–2024 observations).
How cold are winters in Bangor?
Winter nights (December–February) in Bangor average around 4.8°C, with January typically the coldest month (average low 4.4°C).
When is the best time to visit Bangor for good weather?
Late spring and summer offer the most reliable weather in Bangor. June is typically the driest of the warm months (89mm of rain), while August is the warmest, averaging 18.7°C by day — and near the June solstice there are around 17 hours of daylight to enjoy.
How does Bangor's weather compare with the rest of the UK?
Bangor receives 1520mm of rain a year, about 44% wetter than the average for the 121 UK towns tracked on this site (1054mm). Summer daytime highs average 18.2°C against a UK-town average of 19.7°C, and winter nights average 4.8°C versus 3.4°C.
Is it going to rain in Bangor?
For up-to-the-minute rain tracking, check the live rain radar — as a long-term guide, Bangor averages 223 rainy days a year, with December the wettest month (184mm) and April the driest (69mm).
What is the 7-day forecast for Bangor?
See the live hourly and 7-day forecast for day-by-day temperatures and rain chance. The figures on this page are long-term climate averages from 2020–2024, not the live forecast.