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Sea Temperature in Portstewart in May
Complete information on the sea temperature range in the Irish Sea in Portstewart in May. Historical daily data. Climate details for May. Tips on swimming conditions and beach relaxation in Portstewart. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Water Temperature Range in Portstewart in May
8°C
MINIMUN
10°C
AVERAGE
12°C
MAXIMUM
Historical Data of Water Temperature in May in Portstewart
Water Temperature Chart for Irish Sea in Portstewart in May
Sea Temperature Table in Portstewart in May Over the Past Years
| Day | 2024 | 2023 | 2022 | Average |
|---|---|---|---|---|
| May 1 | 10°C | 9°C | 11°C | 9.8°C |
| May 2 | 9°C | 9°C | 9°C | 9.0°C |
| May 3 | 8°C | 9°C | 9°C | 8.8°C |
| May 4 | 8°C | 10°C | 9°C | 9.3°C |
| May 5 | 8°C | 10°C | 11°C | 9.5°C |
| May 6 | 8°C | 10°C | 10°C | 9.3°C |
| May 7 | 8°C | 10°C | 11°C | 9.5°C |
| May 8 | 9°C | 10°C | 9°C | 9.5°C |
| May 9 | 9°C | 10°C | 11°C | 10.3°C |
| May 10 | 10°C | 10°C | 10°C | 10.0°C |
| May 11 | 10°C | 10°C | 10°C | 10.0°C |
| May 12 | 9°C | 10°C | 10°C | 9.8°C |
| May 13 | 9°C | 10°C | 9°C | 9.5°C |
| May 14 | 10°C | 9°C | 10°C | 9.8°C |
| May 15 | 10°C | 10°C | 10°C | 10.0°C |
| May 16 | 10°C | 10°C | 10°C | 10.3°C |
| May 17 | 10°C | 10°C | 11°C | 10.3°C |
| May 18 | 10°C | 10°C | 9°C | 10.0°C |
| May 19 | 10°C | 10°C | 10°C | 10.3°C |
| May 20 | 11°C | 10°C | 11°C | 10.8°C |
| May 21 | 10°C | 10°C | 11°C | 10.3°C |
| May 22 | 10°C | 11°C | 11°C | 10.8°C |
| May 23 | 9°C | 10°C | 11°C | 10.3°C |
| May 24 | 10°C | 10°C | 11°C | 10.5°C |
| May 25 | 9°C | 10°C | 9°C | 9.5°C |
| May 26 | 10°C | 10°C | 11°C | 10.5°C |
| May 27 | 10°C | 10°C | 11°C | 10.3°C |
| May 28 | 10°C | 10°C | 9°C | 9.8°C |
| May 29 | 10°C | 11°C | 11°C | 10.5°C |
| May 30 | 10°C | 11°C | 10°C | 10.3°C |
Portstewart Climate and Swimming Opportunities in May
14°C
Average Day Air Temperature
7°C
Average Night Air Temperature
65 mm
Precipitation Amount per Month
13 days
Number of Rainy Days
16 hrs
Daylight
per Day
6 hrs
Sunshine
per Day
17 km/h
Average Wind Speed
84%
Average
humidity
Portstewart lies within the Northen Ireland in United Kingdom. The average daytime temperature in Portstewart in May is 14°C (58°F), while the nighttime average is 7°C (45°F). There are typically 13 rainy days during the month, with a total precipitation of 65 mm (2.5 inches). The daylight duration in May in Portstewart is 16 hours, with an average of 6 hours of sunshine per day. The average wind speed in May is 17 km/h (11 mph), and the humidity level is around 84%.
The water temperature in Portstewart in May ranges from 8°C to 10°C (46°F to 50°F). At the beginning of the month, the average temperature is around 9°C (48°F), shifting to 10°C (50°F) by mid-May and reaching 10°C (50°F) in the last ten days. Overall, the average sea temperature in Portstewart for May is 10°C (50°F). The water is frigid, but with warmer air, it might be tolerable for a quick swim. Wetsuits are recommended.
Sea Temperature in May in Nearby Cities
Frequently Asked Questions About Water Temperatures in May in Portstewart
What is the sea temperature in Portstewart in May?
The water temperature in the Irish Sea in Portstewart in May ranges from 8°C to 10°C (46°F to 50°F).
Is it possible to swim in the Irish Sea in Portstewart in May?
The average sea temperature in Portstewart in May is 10°C (50°F), and the air temperature is 14°C (58°F), so the water is frigid, but with warmer air, it might be tolerable for a quick swim. Wetsuits are recommended.