Belfast weather
UK towns · Northern Ireland · 54.60°N 5.93°W
Belfast, in Northern Ireland, has its warmest weather in August, when daytime temperatures average 18.3°C, while January nights are the coldest at around 2.8°C. The town sees roughly 1068mm of rain a year; October is normally the wettest month and January the driest. Figures are averaged from 2020–2024 observations.
Climate averages
| Month | Avg high | Avg low | Rain | Rain days |
|---|---|---|---|---|
| Jan | 7.3° | 2.8° | 60mm | 11 |
| Feb | 8.6° | 3.6° | 96mm | 15 |
| Mar | 9.6° | 3.6° | 80mm | 17 |
| Apr | 11.4° | 4.5° | 62mm | 13 |
| May | 14.8° | 7.8° | 76mm | 15 |
| Jun | 17.4° | 10.5° | 87mm | 15 |
| Jul | 18.2° | 11.6° | 98mm | 18 |
| Aug | 18.3° | 11.9° | 113mm | 18 |
| Sep | 16.6° | 10.6° | 100mm | 13 |
| Oct | 13.4° | 8.7° | 120mm | 18 |
| Nov | 10.4° | 5.7° | 75mm | 13 |
| Dec | 8° | 3.9° | 101mm | 15 |
Belfast weather FAQs
What is the warmest month in Belfast?
August is typically the warmest month in Belfast, with average daytime highs of 18.3°C. Summer afternoons (June–August) average around 18.0°C.
What is the wettest month in Belfast?
October is usually the wettest month, with around 120mm of rain over roughly 18 rainy days. January is typically the driest (60mm).
How much does it rain in Belfast per year?
Belfast receives roughly 1068mm of precipitation per year, spread over about 181 days with at least 1mm of rain (based on 2020–2024 observations).
How cold are winters in Belfast?
Winter nights (December–February) in Belfast average around 3.4°C, with January typically the coldest month (average low 2.8°C).