Belfast (ME) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Belfast.
Climate overview of Belfast
Temperatures in Belfast, Maine, United States of America, vary greatly throughout the year. July is the hottest month at 25°C (77°F), while January is the coldest at -1°C (30°F).
With around 1355 mm (53 in) of annual rain/snowfall, Belfast has a notably wet climate. However, this rain/snowfall is not evenly distributed — the city has warm summers and very cold winters. The wettest month is October.
Belfast Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Belfast - and find the best time to visit.
Monthly Temperature in Belfast
The climate in Belfast is known for significant temperature differences throughout the year, making the weather dynamic. Average daytime temperatures reach a comfortable 25°C (77°F) in July. In January, the coolest month of the year, temperatures drop to a very cold -1°C (30°F).
At night, temperatures range from around 15°C (59°F) in July to -12°C (10°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Belfast
Belfast has a notably wet climate with abundant precipitation, recording 1355 mm (53 in) of rain/snowfall per year. Belfast experiences moderate seasonal variation in rainfall, with monthly averages ranging from 163 mm (6.4 in) in October, the wettest month, and 91 mm (3.6 in) in January, the driest month. For more details, please visit our Belfast Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Belfast
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: August and September
- Warmest weather: July and August
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -12°C (10°F).
Frequently asked questions about the climate in Belfast
What is the best time to visit Belfast?
August and September typically offer the most optimal weather in Belfast. In contrast, January, February, March, April, November and December tend to have less optimal conditions. Belfast has warm summers and very cold winters.
What temperatures can I expect in Belfast?
Daytime highs range from -1°C (30°F) in January to 25°C (77°F) in July. Nighttime lows range from -12°C (10°F) to 15°C (59°F). Temperatures vary considerably through the year.
How much rain does Belfast get?
Annual rainfall is around 1355 mm (53 in). October is the wettest month with 163 mm (6.4 in), while January is the driest with 91 mm (3.6 in).
Belfast 3-Day Forecast
Belfast (ME) 3-Day Forecast
Belfast on the map
Belfast is highlighted - select any city to see its climate.
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