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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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Average dry days
23
Dry days
Average rainy days
8
Rainy days
Average snowy days
0
Snow days
Average temperatures
16°/7°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
86 %
Avg humidity

Belfast in May average weather

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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
Patchy rain possible
14° /6° 0.1 mm 4
2 May Overcast
Overcast
14° /6° 0 mm 4
3 May Overcast
Overcast
12° /8° 1 mm 3
4 May Overcast
Overcast
12° /7° 1.6 mm 3
5 May Heavy rain at times
Heavy rain at times
14° /8° 4.4 mm 4
6 May Patchy rain possible
Patchy rain possible
14° /7° 0.3 mm 3
7 May Patchy rain possible
Patchy rain possible
14° /6° 1.2 mm 4
8 May Moderate or heavy rain shower
Moderate or heavy rain shower
16° /8° 9.4 mm 4
9 May Patchy rain possible
Patchy rain possible
16° /8° 0.8 mm 4
10 May Moderate or heavy rain shower
Moderate or heavy rain shower
15° /8° 4.4 mm 4
11 May Moderate or heavy rain shower
Moderate or heavy rain shower
16° /7° 3.7 mm 4
12 May Cloudy
Cloudy
16° /8° 1.3 mm 4
13 May Sunny
Sunny
15° /8° 5.5 mm 4
14 May Patchy rain possible
Patchy rain possible
12° /7° 2.4 mm 3
15 May Patchy rain possible
Patchy rain possible
13° /6° 0.3 mm 3
16 May Patchy rain possible
Patchy rain possible
15° /6° 0.2 mm 4
17 May Overcast
Overcast
16° /7° 0.6 mm 4
18 May Overcast
Overcast
16° /6° 0.1 mm 4
19 May Overcast
Overcast
16° /6° 0.2 mm 4
20 May Patchy rain possible
Patchy rain possible
15° /8° 2 mm 4
21 May Moderate rain at times
Moderate rain at times
15° /9° 2.4 mm 4
22 May Partly cloudy
Partly cloudy
14° /8° 0.4 mm 4
23 May Cloudy
Cloudy
12° /7° 2.6 mm 3
24 May Patchy rain possible
Patchy rain possible
14° /7° 1.4 mm 4
25 May Overcast
Overcast
15° /7° 0.1 mm 4
26 May Overcast
Overcast
14° /8° 1.1 mm 4
27 May Overcast
Overcast
16° /7° 0.9 mm 4
28 May Sunny
Sunny
15° /6° 4.1 mm 4
29 May Sunny
Sunny
16° /7° 0.6 mm 5
30 May Sunny
Sunny
17° /7° 0.1 mm 4
31 May Sunny
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.

May rainfall patterns in Belfast

Explore the daily rainfall trends and prepare for Belfasts May weather 💧

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Location coordinates Where is Belfast?

Get accurate weather forecasts for Belfast, located at latitude 54.597 and longitude -5.925. Stay updated with localized weather information tailored for Belfast.

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