Ideal weather days in Belfast
The best time to visit Belfast for warm, dry weather is May to August, with 11 to 13 such days a month.
How many days here suit you?
Set your ideal day. Each day measured at Belfast's weather station in 2023–2025 is checked against it.
They're most common in May to August.
This station doesn't record cloud cover, so the sky setting is left out here.
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Your ideal days in Belfast, month by month
Why the other days don't count
- Too cold271
- Too wet149
- Too windy91
- Too hot0
A day can fail more than one test.
Warm and dry, beach and mild days
With the Warm & dry preset (a high of 18–33 °C, no more than 1 mm of rain, wind under 20 km/h), Belfast averaged 61 days a year in 2023–2025. Every number here is counted from real measured days in the United Kingdom, not from climate averages.
Beach days (a high of 26–35 °C, almost no rain, mostly sunny) are rare: no month averaged more than 1. Mild, still days (16–26 °C, light wind) are most common in May and August (up to 11 a month, 44 a year).
What spoils the other days
Most of the days that don't count are too cold (a high under 18 °C): 271 a year, mostly in September to April. Another 149 are wet (more than 1 mm of rain), mostly in June to April. A day can fail more than one test.
Belfast weather, month by month
| Month | Typical high | Rain days | Windy days | Clear days | Warm & dry days |
|---|---|---|---|---|---|
| January | 8 °C 46 °F | 14 | 9 | 4 | 0 of 31 |
| February | 10 °C 49 °F | 11 | 10 | 3 | 0 of 28 |
| March | 11 °C 52 °F | 16 | 9 | 4 | 0 of 31 |
| April | 14 °C 56 °F | 15 | 7 | 7 | 2 of 30 |
| May | 18 °C 64 °F | 9 | 3 | 6 | 12 of 31 |
| June | 19 °C 66 °F | 13 | 6 | 6 | 12 of 30 |
| July | 19 °C 65 °F | 18 | 5 | 2 | 11 of 31 |
| August | 19 °C 66 °F | 14 | 6 | 1 | 13 of 31 |
| September | 17 °C 63 °F | 13 | 6 | 4 | 9 of 30 |
| October | 14 °C 57 °F | 16 | 8 | 6 | 2 of 31 |
| November | 12 °C 53 °F | 14 | 7 | 3 | 0 of 30 |
| December | 10 °C 49 °F | 18 | 16 | 2 | 0 of 31 |
| Year | 171 | 91 | 46 | 61 of 365 |
Typical high is the median daily maximum. A rain day has 1 mm or more; a windy day a mean wind above 20 km/h; a clear day a daytime cloud cover of 2/8 or less on average (9:00–17:00). Days are averaged over 2023–2025 and scaled to the length of each month.
Year by year
- 2023 53 warm, dry days
- 2024 57 warm, dry days
- 2025 incomplete (8 of 12 months)
Questions
When is the best time to visit Belfast for good weather?
The best time to visit Belfast for warm, dry weather is May to August, with 11 to 13 such days a month. Beach days (a high of 26–35 °C, almost no rain, mostly sunny) are rare: no month averaged more than 1. Counted from measured days at Belfast Aldergrove station, 2023–2025.
Does it rain a lot in Belfast?
On average 171 days a year had 1 mm of rain or more in 2023–2025. The wettest month was July (18 rain days), the driest May (9).
How many sunny days does Belfast get a year?
About 46 days a year had mostly clear skies (daytime cloud cover of 2/8 or less on average, 9:00–17:00), most of them in April (7).
How warm does Belfast get?
The median daily high ranged from 8 °C (46 °F) in January to 19 °C (66 °F) in June.
Nearby
More cities in the United Kingdom
Where is the best climate in the United Kingdom?
Open Belfast on the map Set your own temperature, rain and wind limits.
Source: Belfast Aldergrove weather station (03917099999), 19 km from the centre of Belfast, 82 m above sea level. Daily records from NOAA's Global Surface Summary of the Day, 2023–2025; 87% of days have a complete record. A single station may not represent every part of a city, and three years is a short record.