City in Northern Ireland, United Kingdom
Belfast weather by month and the best time to visit
When to go to Belfast
May–September is mildest and longest-lit. Rain is possible any month; winters are dark and damp. July's Twelfth bonfires and marches can disrupt travel.
Belfast weather by month
Average daily high, rainfall and conditions.
- Jan8°98 mm
- Feb7°78 mm
- Mar8°76 mm
- Apr10°60 mm
- May13°71 mm
- Jun16°83 mm
- Jul17°90 mm
- Aug17°99 mm
- Sep16°82 mm
- Oct13°116 mm
- Nov10°112 mm
- Dec8°104 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 8°C46°F | 5°C40°F | 98 mm | 91% | Cold |
| February | 7°C45°F | 4°C40°F | 78 mm | 90% | Cold |
| March | 8°C47°F | 4°C40°F | 76 mm | 88% | Cold |
| April | 10°C51°F | 6°C43°F | 60 mm | 86% | Cold |
| May | 13°C56°F | 8°C47°F | 71 mm | 85% | Cool |
| June | 16°C60°F | 11°C52°F | 83 mm | 85% | Cool |
| July | 17°C63°F | 12°C54°F | 90 mm | 86% | Cool |
| August | 17°C63°F | 13°C55°F | 99 mm | 87% | Cool |
| September | 16°C60°F | 12°C53°F | 82 mm | 88% | Cool |
| October | 13°C56°F | 10°C49°F | 116 mm | 88% | Cool |
| November | 10°C50°F | 7°C45°F | 112 mm | 90% | Cold |
| December | 8°C47°F | 5°C42°F | 104 mm | 91% | Cold |
Best months across United Kingdom
| Place | Best months | Warmest month |
|---|---|---|
| London | May–Jul, Sep | Jul (23°C) |
| Edinburgh | May–Jun, Aug–Sep | Jul (18°C) |
| Manchester | May–Jul, Sep | Jul (20°C) |
| Liverpool | May–Jul, Sep | Jul (19°C) |
| Oxford | May–Jun, Sep | Jul (22°C) |
| Bath | May–Jun, Sep | Jul (21°C) |
| Cambridge | May–Jun, Sep | Jul (23°C) |
| Glasgow | May–Jul, Sep | Jul (18°C) |
| Brighton | May–Jul, Sep | Jul (21°C) |
| Scottish Highlands | May–Jun, Sep | Jul (18°C) |
| Isle of Skye | May–Jun, Sep | Jul (15°C) |
| York | May–Jun, Sep–Oct | Jul (21°C) |
| Bristol | May–Jul, Sep | Jul (22°C) |
| Lake District | May–Jun, Sep–Oct | Jul (18°C) |
| Cornwall | May–Jun, Sep | Jul (18°C) |
| Cotswolds | May–Jun, Sep–Oct | Jul (22°C) |
| Belfast | May–Jul, Sep | Jul (17°C) |
| Cardiff | May–Jul, Sep | Jul (20°C) |
| Birmingham | May–Jul, Sep | Jul (21°C) |
| Newcastle | May–Jul, Sep | Jul (19°C) |
| Leeds | May–Jul, Sep | Jul (21°C) |
| Snowdonia | May–Jul, Sep | Jul (19°C) |
Quick answers
What is the best month to visit Belfast?
May–Jul, Sep. May–September is mildest and longest-lit. Rain is possible any month; winters are dark and damp. July's Twelfth bonfires and marches can disrupt travel.
When is the rainy season in Belfast?
Rain peaks in October with about 116 mm. No month averages 150 mm or more.
What is the hottest month in Belfast?
July, with average highs of 17°C (63°F).
How cold does Belfast get?
The coolest nights are in February, averaging 4°C (40°F).
More about Belfast
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Sources
- NASA POWER climatology (2001–2020)
- Translink
- Visit Belfast
- Belfast Health and Social Care Trust
- Belfast City Airport
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.