SeasonMapSaint Helier (Channel Islands) weather in July
Jersey
July in Saint Helier: nice, a little rain, with clean air — one of the best months to visit.
#1 of 12 months in Saint Helier · #166 of 1383 destinations to visit in July · comfort 92/100 (tier S)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Saint Helier in July
No notes yet. Open Saint Helier on the map to add the first one.
Saint Helier climate normals — July
| Daytime high | 22°C / 71°F | 😎 nice |
|---|---|---|
| Nighttime low | 15°C / 59°F | |
| Feels like (high) | 21°C / 70°F | |
| Sea temperature | 18°C / 65°F | 🧊 bracing |
| Rainfall | 41 mm / 1.6 in | 🌦 some rain |
| Rainy days | 9 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | 15°C / 58°F | |
| Sunshine | 12.4 h/day | |
| Daylight | 15.7 h | |
| Wind | 28 km/h / 17 mph | |
| Air quality (US AQI) | 39 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Saint Helier in July
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdstravelers describe it as peak season, Beach season, school holidays in 7 of the markets that fill it
Sourced from traveler notes: “…retches broken up by a few dull, rainy days. July/August is peak season, so expect queues and full car parks, plus school-holiday c…” — Tripadvisor community
Peak crowdsBusyShoulder seasonQuiet
Best months for Saint Helier's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Best weatherSaint Helier's weather peaks June–August, best around July.
Best weatherFair weatherToughest weather
What's on in Saint Helier in July
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Beach season
20 Jun – 20 Sep · usuallySea warm enoughCrowdedThe Channel only really warms up for three months, and the tide does the rest of the work: the sea goes out far enough at St Aubin's Bay to double the beach. Bring a wetsuit if you plan to be in it long. Source ↗
Nearby, and something's on
Within 300 km of Saint Helier — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Saint Helier?
Saint Helier in July — FAQ
- Is July a good time to visit Saint Helier?
- July in Saint Helier: nice, a little rain, with clean air — one of the best months to visit. It ranks #1 of 12 months for Saint Helier on SeasonMap's comfort score (92/100).
- What is the weather like in Saint Helier in July?
- In July, Saint Helier averages a daily high of 21.8°C and a low of 15°C, with about 40.8 mm of rain over roughly 8.6 rainy days.
- What is the air quality in Saint Helier in July?
- Saint Helier has a mean US Air Quality Index of about 39 in July.
Other months in Saint Helier
Compare Saint Helier in July
Warmer or cooler than Saint Helier in July
Similar destinations in Western Europe — July
Within 300 km: Isle of Wight's Round the Island Race around 20 Jun – 10 Jul, and Nantes' Le Voyage a Nantes on 4 Jul – 6 Sep.