City and County of Swansea
May
Weather in City and County of Swansea for May 2025
Your guide to City and County of Swansea weather in May - trends and predictions
In general, the average temperature in City and County of Swansea at the beginning of May is 13.1 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 16 °C by the end of May.
City and County of Swansea sees moderate rainfall in May, averaging 6 rainy days.
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25
Dry days
6
Rainy days
0
Snow days
16°/9°
Temperatures
20 km/h
Avg max wind
82 %
Avg humidity
City and County of Swansea in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  14° | 2 12° | 3  12° | 4  13° | |||
| 5 13° | 6 14° | 7  14° | 8 13° | 9 14° | 10 14° | 11 15° |
| 12 16° | 13 15° | 14 14° | 15 14° | 16  15° | 17 15° | 18 15° |
| 19 16° | 20 16° | 21 16° | 22 16° | 23 14° | 24  16° | 25 16° |
| 26 16° | 27 15° | 28 16° | 29 16° | 30 17° | 31 16° |
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Access City and County of Swansea weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during May in City and County of Swansea
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° /8° | 5.5 mm | 4 | |
| 2 May | Patchy rain possible | 12° /8° | 20.9 mm | 3 | |
| 3 May | Partly cloudy | 12° /8° | 0.6 mm | 4 | |
| 4 May | Moderate or heavy rain shower | 13° /8° | 10.5 mm | 3 | |
| 5 May | Patchy rain possible | 13° /9° | 3.4 mm | 3 | |
| 6 May | Moderate or heavy rain shower | 14° /9° | 5.2 mm | 3 | |
| 7 May | Cloudy | 14° /10° | 0.2 mm | 3 | |
| 8 May | Moderate or heavy rain shower | 13° /10° | 9.6 mm | 3 | |
| 9 May | Patchy rain possible | 14° /10° | 0.8 mm | 4 | |
| 10 May | Moderate rain at times | 14° /10° | 1.3 mm | 4 | |
| 11 May | Moderate or heavy rain shower | 15° /9° | 3.1 mm | 4 | |
| 12 May | Patchy rain possible | 16° /9° | 2.2 mm | 4 | |
| 13 May | Patchy rain possible | 15° /9° | 5.7 mm | 4 | |
| 14 May | Patchy rain possible | 14° /10° | 1.1 mm | 4 | |
| 15 May | Partly cloudy | 14° /9° | 0.3 mm | 4 | |
| 16 May | Overcast | 15° /8° | 3 mm | 4 | |
| 17 May | Overcast | 15° /9° | 0.4 mm | 4 | |
| 18 May | Overcast | 15° /10° | 1.2 mm | 4 | |
| 19 May | Patchy rain possible | 16° /9° | 0.2 mm | 4 | |
| 20 May | Cloudy | 16° /9° | 0 mm | 5 | |
| 21 May | Partly cloudy | 16° /10° | 1.7 mm | 4 | |
| 22 May | Overcast | 16° /9° | 0.9 mm | 4 | |
| 23 May | Overcast | 14° /8° | 0.2 mm | 4 | |
| 24 May | Sunny | 16° /9° | 0 mm | 5 | |
| 25 May | Cloudy | 16° /9° | 4.6 mm | 4 | |
| 26 May | Overcast | 16° /10° | 2.2 mm | 4 | |
| 27 May | Cloudy | 15° /9° | 1.1 mm | 4 | |
| 28 May | Overcast | 16° /11° | 6 mm | 4 | |
| 29 May | Partly cloudy | 16° /9° | 0.3 mm | 4 | |
| 30 May | Sunny | 17° /9° | 0.2 mm | 5 | |
| 31 May | Overcast | 16° /10° | 0.2 mm | 4 | |
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Important Notice
Our weather forecast for City and County of Swansea 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 City and County of Swansea forecast closer to your planned date for the most up-to-date weather information.
City and County of Swansea in May - FAQ
What are the expected maximum and minimum temperatures in City and County of Swansea during May?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in City and County of Swansea during May?
Significant rainfall exceeding 156.2 mm is expected in City and County of Swansea during May, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in City and County of Swansea during May?
The average wind speed in City and County of Swansea during May is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
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