Northern Ireland (Belfast)
May
Weather in Northern Ireland for May 2025
Your guide to Northern Ireland weather in May - trends and predictions
The forecast for the next days in Northern Ireland predicts temperatures to be around 15 °C, close to the historical average.
In general, the average temperature in Northern Ireland at the beginning of May is 13.3 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 15.7 °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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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  14° | 2  13° | 3 13° | 4  11° | |||
| 5 13° | 6 14° | 7 15° | 8 16° | 9 18° | 10  17° | 11 17° |
| 12 16° | 13 16° | 14 15° | 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 Northern Ireland
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° /5° | 1.9 mm | 0.9 | |
| 2 May | Partly cloudy | 13° /4° | 0.1 mm | 0.9 | |
| 3 May | Partly cloudy | 13° /4° | 0.1 mm | 1.1 | |
| 4 May | Cloudy | 11° /4° | 0.1 mm | 1.2 | |
| 5 May | Partly cloudy | 13° /3° | 0 mm | 1.2 | |
| 6 May | Partly cloudy | 14° /3° | 0 mm | 3 | |
| 7 May | Patchy rain possible | 15° /6° | 0.2 mm | 3 | |
| 8 May | Partly cloudy | 16° /6° | 0 mm | 4 | |
| 9 May | Partly cloudy | 18° /7° | 0 mm | 4 | |
| 10 May | Sunny | 17° /6° | 0 mm | 4 | |
| 11 May | Sunny | 17° /4° | 0 mm | 4 | |
| 12 May | Sunny | 16° /7° | 0.1 mm | 4 | |
| 13 May | Patchy rain possible | 16° /7° | 1.6 mm | 3 | |
| 14 May | Patchy rain possible | 15° /6° | 0 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 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.
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
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