May
Weather in St Helier for May 2025
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 13.3 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 15.3 °C by the end of May.
St Helier sees moderate rainfall in May, averaging 7 rainy days.
Is May a good time to visit St Helier? check out the best time to travel to St Helier page.
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24
Dry days
7
Rainy days
0
Snow days
15°/11°
Temperatures
30 km/h
Avg max wind
83 %
Avg humidity
St Helier in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  13° | 2 13° | 3  13° | 4  14° | |||
| 5 13° | 6 13° | 7  14° | 8 14° | 9  13° | 10 14° | 11 14° |
| 12 14° | 13  15° | 14  14° | 15 14° | 16 14° | 17 15° | 18 14° |
| 19 15° | 20 15° | 21 14° | 22 14° | 23 14° | 24 14° | 25 16° |
| 26 15° | 27 15° | 28 16° | 29 15° | 30 15° | 31 15° |
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Temperatures trend during May in St Helier
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 | 13° /9° | 7.4 mm | 4 | |
| 2 May | Patchy rain possible | 13° /9° | 8 mm | 3 | |
| 3 May | Overcast | 13° /9° | 0 mm | 4 | |
| 4 May | Moderate or heavy rain shower | 14° /10° | 2.5 mm | 4 | |
| 5 May | Patchy rain possible | 13° /11° | 3.9 mm | 3 | |
| 6 May | Moderate or heavy rain shower | 13° /10° | 7.7 mm | 3 | |
| 7 May | Partly cloudy | 14° /12° | 0 mm | 4 | |
| 8 May | Moderate rain at times | 14° /11° | 3.8 mm | 4 | |
| 9 May | Heavy rain at times | 13° /11° | 4.9 mm | 3 | |
| 10 May | Patchy rain possible | 14° /11° | 0.9 mm | 4 | |
| 11 May | Patchy rain possible | 14° /11° | 0.9 mm | 4 | |
| 12 May | Moderate rain at times | 14° /11° | 2.9 mm | 3 | |
| 13 May | Cloudy | 15° /11° | 4.7 mm | 4 | |
| 14 May | Sunny | 14° /11° | 0.3 mm | 4 | |
| 15 May | Moderate or heavy rain shower | 14° /11° | 2.2 mm | 3 | |
| 16 May | Sunny | 14° /10° | 0.1 mm | 4 | |
| 17 May | Overcast | 15° /11° | 0.1 mm | 4 | |
| 18 May | Cloudy | 14° /12° | 0.7 mm | 3 | |
| 19 May | Partly cloudy | 15° /12° | 0.1 mm | 4 | |
| 20 May | Overcast | 15° /12° | 0 mm | 5 | |
| 21 May | Overcast | 14° /11° | 0.3 mm | 3 | |
| 22 May | Cloudy | 14° /12° | 0.3 mm | 4 | |
| 23 May | Cloudy | 14° /11° | 0.4 mm | 4 | |
| 24 May | Sunny | 14° /11° | 0 mm | 4 | |
| 25 May | Sunny | 16° /12° | 0.9 mm | 5 | |
| 26 May | Sunny | 15° /12° | 0.3 mm | 4 | |
| 27 May | Sunny | 15° /11° | 1.9 mm | 4 | |
| 28 May | Partly cloudy | 16° /12° | 1 mm | 5 | |
| 29 May | Overcast | 15° /12° | 2.3 mm | 4 | |
| 30 May | Sunny | 15° /12° | 1.3 mm | 4 | |
| 31 May | Overcast | 15° /12° | 0.4 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.
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 15° and lows near 11°, suitable for diverse activities and preferences.
How much rainfall should be expected in St Helier during May?
Significant rainfall exceeding 104.1 mm is expected in St Helier during May, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in St Helier during May?
The average wind speed in St Helier during May is 30 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to St Helier in May?
As you prepare for your trip to St Helier in May, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in St Helier, during May, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
May rainfall patterns in St Helier
Explore the daily rainfall trends and prepare for St Heliers May weather 💧
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