Belfast
May
Weather in Belfast for May 2025
Your guide to Belfast weather in May - trends and predictions
In general, the average temperature in Belfast at the beginning of May is 13.4 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 15.7 °C by the end of May.
Belfast sees moderate rainfall in May, averaging 8 rainy days.
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23
Dry days
8
Rainy days
0
Snow days
16°/7°
Temperatures
16 km/h
Avg max wind
86 %
Avg humidity
Belfast in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  14° | 2  14° | 3 12° | 4 12° | |||
| 5  14° | 6 14° | 7 14° | 8  16° | 9 16° | 10 15° | 11 16° |
| 12  16° | 13  15° | 14 12° | 15 13° | 16 15° | 17 16° | 18 16° |
| 19 16° | 20 15° | 21 15° | 22  14° | 23 12° | 24 14° | 25 15° |
| 26 14° | 27 16° | 28 15° | 29 16° | 30 17° | 31 17° |
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Temperatures trend during May in Belfast
See the weather trend as well as the moving average line
May weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May | Patchy rain possible | 14° /6° | 0.1 mm | 4 | |
| 2 May | Overcast | 14° /6° | 0 mm | 4 | |
| 3 May | Overcast | 12° /8° | 1 mm | 3 | |
| 4 May | Overcast | 12° /7° | 1.6 mm | 3 | |
| 5 May | Heavy rain at times | 14° /8° | 4.4 mm | 4 | |
| 6 May | Patchy rain possible | 14° /7° | 0.3 mm | 3 | |
| 7 May | Patchy rain possible | 14° /6° | 1.2 mm | 4 | |
| 8 May | Moderate or heavy rain shower | 16° /8° | 9.4 mm | 4 | |
| 9 May | Patchy rain possible | 16° /8° | 0.8 mm | 4 | |
| 10 May | Moderate or heavy rain shower | 15° /8° | 4.4 mm | 4 | |
| 11 May | Moderate or heavy rain shower | 16° /7° | 3.7 mm | 4 | |
| 12 May | Cloudy | 16° /8° | 1.3 mm | 4 | |
| 13 May | Sunny | 15° /8° | 5.5 mm | 4 | |
| 14 May | Patchy rain possible | 12° /7° | 2.4 mm | 3 | |
| 15 May | Patchy rain possible | 13° /6° | 0.3 mm | 3 | |
| 16 May | Patchy rain possible | 15° /6° | 0.2 mm | 4 | |
| 17 May | Overcast | 16° /7° | 0.6 mm | 4 | |
| 18 May | Overcast | 16° /6° | 0.1 mm | 4 | |
| 19 May | Overcast | 16° /6° | 0.2 mm | 4 | |
| 20 May | Patchy rain possible | 15° /8° | 2 mm | 4 | |
| 21 May | Moderate rain at times | 15° /9° | 2.4 mm | 4 | |
| 22 May | Partly cloudy | 14° /8° | 0.4 mm | 4 | |
| 23 May | Cloudy | 12° /7° | 2.6 mm | 3 | |
| 24 May | Patchy rain possible | 14° /7° | 1.4 mm | 4 | |
| 25 May | Overcast | 15° /7° | 0.1 mm | 4 | |
| 26 May | Overcast | 14° /8° | 1.1 mm | 4 | |
| 27 May | Overcast | 16° /7° | 0.9 mm | 4 | |
| 28 May | Sunny | 15° /6° | 4.1 mm | 4 | |
| 29 May | Sunny | 16° /7° | 0.6 mm | 5 | |
| 30 May | Sunny | 17° /7° | 0.1 mm | 4 | |
| 31 May | Sunny | 17° /8° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Belfast in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Belfast forecast closer to your planned date for the most up-to-date weather information.
Belfast in May - FAQ
What are the expected maximum and minimum temperatures in Belfast during May?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Belfast during May?
Moderate rainfall is anticipated in Belfast during May, with a total of 92.2 mm spread over approximately 8 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Belfast during May?
The average wind speed in Belfast during May is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
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