Jersey in August has mild conditions, with highs averaging 19.1°C (66°F) and noticeably cooler mornings. Winds are noticeable.
This month falls at the end of Summer.
Temperature
19°C / 17°C
Jersey Weather in August 2026
Monthly climate averages for Saint Helier. Based on 10-year ERA5 reanalysis data.
Cfb Oceanic
Climate Overview
Compared to July, this month is about 1°C warmer with 2 fewer rainy days.
Monthly August Averages
Feels Like
19°C / 15°C
Rain
9 days · 57 mm
Sunshine
11.6h / day
Humidity
82% — Very Humid
Wind
29 km/h
Wind Direction
WNW (287°)
Gusts
39 km/h
Daylight
14.3 h
Cloud Cover
56%
Clear Sky Days
3.3
Dew Point
15°C — Comfortable
Moon Phase
Waxing Crescent · 3%
Seasonal Demand
Busy (4/5)
Sun Position
Sunrise 06:01
Daylight 14.4h
Sunset 20:27
Pros
- Comfortable temperatures for sightseeing
- Abundant sunshine for exploring and outdoor fun
- One of the best months to visit
Cons
- Popular month due to favourable weather conditions
What to Wear
Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions. Pack a compact umbrella or light rain jacket for occasional showers.
Packing List
UmbrellaWindbreakerComfortable walking shoes
Compare Months
January
Wet 
February
Poor 
March
Poor April
Fair May
Fair June best
Good July best
Excellent August best
Excellent September best
Good October
Fair November
Wet December
Wet | Month | Temp | Feels Like | Rain | Sun | Humidity | Status | Details |
|---|---|---|---|---|---|---|---|
| January | 9°C / 7°C | 5°C / 1°C | 18days (131 mm) Wet | 4.7h Fair | 80% Humid | Wet | View Details |
| February | 9°C / 8°C | 5°C / 1°C | 14days (88 mm) Wet | 5.9h Fair | 82% Humid | Poor | View Details |
| March | 10°C / 8°C | 6°C / 2°C | 13days (67 mm) Wet | 8.7h Good | 80% Humid | Poor | View Details |
| April | 12°C / 9°C | 9°C / 4°C | 8days (44 mm) Wet | 11.3h Excellent | 78% Humid | Fair | View Details |
| May | 14°C / 12°C | 12°C / 8°C | 10days (49 mm) Wet | 12.6h Excellent | 82% Humid | Fair | View Details |
| June best | 17°C / 15°C | 16°C / 12°C | 10days (61 mm) Wet | 13h Excellent | 83% Humid | Good | View Details |
| July best | 18°C / 17°C | 18°C / 14°C | 11days (55 mm) Wet | 12.7h Excellent | 83% Humid | Excellent | View Details |
| August best | 19°C / 17°C | 19°C / 15°C | 9days (57 mm) Wet | 11.6h Excellent | 82% Humid | Excellent | View Details |
| September best | 18°C / 16°C | 17°C / 13°C | 12days (101 mm) Wet | 10.1h Excellent | 80% Humid | Good | View Details |
| October | 16°C / 14°C | 13°C / 10°C | 17days (151 mm) Wet | 7.6h Good | 80% Humid | Fair | View Details |
| November | 13°C / 11°C | 9°C / 6°C | 18days (149 mm) Wet | 5.7h Fair | 79% Humid | Wet | View Details |
| December | 10°C / 9°C | 6°C / 2°C | 18days (153 mm) Wet | 4.3h Fair | 82% Humid | Wet | View Details |
Frequently Asked Questions
August is typically excellent for visiting Jersey, with average highs of 19°C (66°F) and around 9 rainy days. Jersey in August has mild conditions, with highs averaging 19.1°C (66°F) and noticeably cooler mornings. Winds are notic
Jersey typically sees around 9 rainy days in August with 57 mm (2.2 in) of total rainfall. An umbrella should suffice.
With highs of 19°C (66°F) and lows of 17°C (63°F) in August, we recommend: Umbrella, Windbreaker, Comfortable walking shoes. Comfortable walking shoes are essential.
Yes, August offers some of the best weather conditions in Jersey with comfortable temperatures and lower chances of rain.
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