Monthly climate averages for Trinity, Jersey. Based on 10-year ERA5 reanalysis data.
Cfb Oceanic
Climate OverviewTrinity, Jersey in May has mild conditions, with highs averaging 13.7°C (57°F) and noticeably cooler mornings. Winds are noticeable. Sea temperature stays cool at 14.3°C (58°F).
This month falls at the end of Spring.
Daily highs in May gradually rise from around 12°C (54°F) at the start to 15°C (60°F) by month's end.
May sees fairly even rainfall, totalling about 47 mm across the month.
The warmest days tend to fall around the 29th, averaging 15.4°C (60°F).
Compared to April, this month is about 3°C warmer with 0 fewer rainy days. Temperatures will rise further into June.
Daily averages based on historical data (2016–2025)
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 9°C / 6°C | 4°C / 0°C | 17days (130 mm) Wet | 4.3h Fair | 78% Humid | 1.4 Low | Poor | View Details |
| February | 9°C / 7°C | 4°C / 0°C | 14days (84 mm) Wet | 5.9h Fair | 79% Humid | 2 Low | Poor | View Details |
| March | 10°C / 7°C | 5°C / 1°C | 14days (75 mm) Wet | 8h Good | 79% Humid | 3.6 Moderate | Poor | View Details |
| April | 11°C / 8°C | 8°C / 3°C | 9days (44 mm) Wet | 10.6h Excellent | 77% Humid | 5.2 High | Fair | View Details |
| May | 14°C / 11°C | 12°C / 7°C | 9days (48 mm) Wet | 11.9h Excellent | 81% Humid | 6.2 High | Fair | View Details |
| June best | 16°C / 14°C | 16°C / 11°C | 10days (58 mm) Wet | 12.1h Excellent | 83% Humid | 6.6 High | Good | View Details |
| July best | 18°C / 16°C | 18°C / 13°C | 9days (46 mm) Wet | 12.4h Excellent | 82% Humid | 6.1 High | Excellent | View Details |
| August best | 19°C / 16°C | 18°C / 14°C | 9days (58 mm) Wet | 11.1h Excellent | 81% Humid | 5.8 High | Excellent | View Details |
| September | 18°C / 15°C | 16°C / 12°C | 12days (95 mm) Wet | 9.5h Good | 78% Humid | 4.3 Moderate | Fair | View Details |
| October | 15°C / 13°C | 12°C / 9°C | 16days (131 mm) Wet | 7.3h Good | 78% Humid | 2.8 Moderate | Fair | View Details |
| November | 12°C / 10°C | 8°C / 4°C | 18days (144 mm) Wet | 5.5h Fair | 78% Humid | 1.6 Low | Wet | View Details |
| December | 10°C / 8°C | 5°C / 2°C | 17days (143 mm) Wet | 3.8h Poor | 80% Humid | 1.1 Low | Poor | View Details |
Bundle up with a warm coat, scarf, and closed-toe shoes. Thermal layers underneath give flexibility between indoors and outdoors.
A waterproof jacket or compact umbrella is recommended for occasional showers.
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