May
Weather in St Helier for May 2026
Your guide to St Helier weather in May - trends and predictions
In general, the average temperature in St Helier at the beginning of May is 13.1 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 15.4 °C by the end of May.
St Helier in May brings notable rainfall, with an average of 17 rainy days and a total precipitation of 48 mm.
Temperatures
Rain 🌧️
14
Dry days
17
Rainy days
0
Snow days
14°/11°
Temperatures
29 km/h
Avg max wind
83 %
Avg humidity
St Helier Weather May
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Temperatures trend during May in St Helier
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May weather in St Helier day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Patchy rain possible | 14° /10° | 5 mm | 4 | |
| 2 May | Patchy rain possible | 13° /10° | 6.9 mm | 3 | |
| 3 May |  Overcast | 13° /10° | 1.5 mm | 3 | |
| 4 May |  Moderate or heavy rain shower | 13° /9° | 1.7 mm | 4 | |
| 5 May | Patchy rain possible | 13° /10° | 2.8 mm | 3 | |
| 6 May | Moderate or heavy rain shower | 13° /10° | 5.2 mm | 3 | |
| 7 May |  Partly cloudy | 13° /11° | 0 mm | 4 | |
| 8 May | Moderate rain at times | 13° /10° | 2.5 mm | 3 | |
| 9 May |  Heavy rain at times | 13° /10° | 3.3 mm | 3 | |
| 10 May | Patchy rain possible | 14° /11° | 1.4 mm | 3 | |
| 11 May | Patchy rain possible | 14° /11° | 1 mm | 4 | |
| 12 May | Moderate rain at times | 14° /11° | 2.4 mm | 3 | |
| 13 May |  Cloudy | 15° /11° | 3.1 mm | 4 | |
| 14 May | Patchy rain possible | 15° /11° | 0.2 mm | 4 | |
| 15 May | Patchy rain possible | 14° /10° | 1.5 mm | 3 | |
| 16 May |  Sunny | 14° /10° | 0.1 mm | 4 | |
| 17 May | Overcast | 14° /11° | 0.1 mm | 3 | |
| 18 May | Cloudy | 14° /11° | 0.5 mm | 4 | |
| 19 May | Partly cloudy | 15° /11° | 0 mm | 4 | |
| 20 May | Sunny | 15° /12° | 0 mm | 4 | |
| 21 May | Overcast | 14° /11° | 1.5 mm | 3 | |
| 22 May | Patchy rain possible | 14° /12° | 0.3 mm | 3 | |
| 23 May | Cloudy | 14° /11° | 0.3 mm | 3 | |
| 24 May | Sunny | 14° /11° | 0.3 mm | 4 | |
| 25 May | Sunny | 16° /12° | 1.2 mm | 4 | |
| 26 May | Sunny | 15° /12° | 0.5 mm | 4 | |
| 27 May | Sunny | 15° /12° | 1.4 mm | 4 | |
| 28 May | Partly cloudy | 16° /13° | 0.8 mm | 4 | |
| 29 May | Overcast | 15° /12° | 1.5 mm | 3 | |
| 30 May | Sunny | 16° /12° | 0.8 mm | 4 | |
| 31 May | Overcast | 15° /12° | 0.3 mm | 4 | |
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Important Notice
Our weather forecast for St Helier 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 St Helier forecast closer to your planned date for the most up-to-date weather information.
Change Month
St Helier in May - FAQ
What are the expected maximum and minimum temperatures in St Helier during May?
During May, expect a variety of temperatures with highs around 14° and lows near 11°, suitable for diverse activities and preferences.
How much rainfall should be expected in St Helier during May?
In May, St Helier can expect light to moderate rainfall, totaling 48 mm across approximately 17 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in St Helier during May?
The average wind speed in St Helier during May is 29 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in St Helier
Explore the daily rainfall trends and prepare for St Heliers May weather 💧
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