Northern Ireland (Belfast)
May
Weather in Northern Ireland for May 2026
Your guide to Northern Ireland weather in May - trends and predictions
In general, the average temperature in Northern Ireland at the beginning of May is 13.1 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 15.1 °C by the end of May.
Northern Ireland experiences moderate rainfall in May, with an average of 8 rainy days and a total precipitation of 106.2 mm.
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Temperatures
Rain 🌧️
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23
Dry days
8
Rainy days
0
Snow days
16°/7°
Temperatures
17 km/h
Avg max wind
86 %
Avg humidity
Northern Ireland Weather May
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What’s the Weather Like in Northern Ireland This May?
Discover the average temperatures and weather trends across Northern Ireland’s cities this May.
Temperatures trend during May in Northern Ireland
See the weather trend as well as the moving average line
May weather in Northern Ireland day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Patchy rain possible | 14° /5° | 0.4 mm | 3 | |
| 2 May | Patchy rain possible | 13° /5° | 0.1 mm | 3 | |
| 3 May |  Overcast | 12° /6° | 0.7 mm | 3 | |
| 4 May | Overcast | 12° /5° | 1 mm | 3 | |
| 5 May |  Heavy rain at times | 13° /6° | 2.9 mm | 4 | |
| 6 May | Patchy rain possible | 14° /6° | 0.2 mm | 3 | |
| 7 May | Patchy rain possible | 14° /6° | 0.8 mm | 4 | |
| 8 May |  Moderate or heavy rain shower | 15° /7° | 6.3 mm | 4 | |
| 9 May | Patchy rain possible | 16° /7° | 0.5 mm | 4 | |
| 10 May | Patchy rain possible | 16° /6° | 2.9 mm | 4 | |
| 11 May | Moderate or heavy rain shower | 16° /7° | 4 mm | 4 | |
| 12 May |  Cloudy | 14° /7° | 1.5 mm | 4 | |
| 13 May |  Sunny | 16° /8° | 3.7 mm | 4 | |
| 14 May | Patchy rain possible | 13° /7° | 1.6 mm | 3 | |
| 15 May | Patchy rain possible | 14° /5° | 0.2 mm | 4 | |
| 16 May | Patchy rain possible | 16° /6° | 0.1 mm | 4 | |
| 17 May | Overcast | 17° /7° | 0.4 mm | 4 | |
| 18 May | Patchy rain possible | 17° /6° | 0.8 mm | 4 | |
| 19 May | Overcast | 15° /6° | 0.1 mm | 4 | |
| 20 May | Patchy rain possible | 15° /7° | 1.8 mm | 4 | |
| 21 May | Patchy rain possible | 16° /8° | 1.6 mm | 4 | |
| 22 May |  Partly cloudy | 14° /6° | 0.3 mm | 4 | |
| 23 May |  Light drizzle | 13° /6° | 2.2 mm | 3 | |
| 24 May | Patchy rain possible | 15° /8° | 3.3 mm | 4 | |
| 25 May | Overcast | 14° /6° | 1.6 mm | 3 | |
| 26 May | Light rain shower | 13° /7° | 4.5 mm | 3 | |
| 27 May | Light rain shower | 14° /7° | 1.3 mm | 3 | |
| 28 May | Light rain shower | 15° /7° | 3.7 mm | 4 | |
| 29 May | Light rain shower | 16° /8° | 3.1 mm | 4 | |
| 30 May | Sunny | 17° /7° | 0.4 mm | 4 | |
| 31 May | Sunny | 17° /8° | 1.5 mm | 5 | |
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Important Notice
Our weather forecast for Northern Ireland 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 Northern Ireland forecast closer to your planned date for the most up-to-date weather information.
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Northern Ireland in May - FAQ
What are the expected maximum and minimum temperatures in Northern Ireland 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 Northern Ireland during May?
Significant rainfall exceeding 106.2 mm is expected in Northern Ireland during May, occurring over more than 8 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Northern Ireland during May?
The average wind speed in Northern Ireland during May is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Northern Ireland
Explore the daily rainfall trends and prepare for Northern Irelands May weather 💧
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