SeasonMapSaint Helier (Channel Islands) weather by month
Jersey
The best time to visit Saint Helier (Channel Islands) is June to August — 92/100 in July, 22°C and 9 rainy days. The best season is summer, June to August (90/100 on average).
The worst month is January at 52/100 — cold, rainy, clean air. See January →
Updated September 2026 · climate normals from ERA5 reanalysis
Saint Helier, month by month
Comfort score out of 100 for the kind of trip Saint Helier is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.
| Month | Score | Tier | High | Rain | Sun | Crowds | On |
|---|---|---|---|---|---|---|---|
| JanJanuary | 52 | D | 10°C | 17 d | 4 h | Quiet | — |
| FebFebruary | 61 | C | 10°C | 14 d | 6 h | Shoulder | — |
| MarMarch | 68 | C | 12°C | 13 d | 8 h | Shoulder | — |
| AprApril | 79 | B | 15°C | 8 d | 11 h | Shoulder | — |
| MayMay | 85 | A | 18°C | 9 d | 12 h | Busy | 1 |
| JunJune | 88 | A | 20°C | 9 d | 12 h | Busy | 1 |
| JulJuly | 92 | S | 22°C | 9 d | 12 h | Peak | 1 |
| AugAugust | 89 | A | 22°C | 9 d | 11 h | Peak | 2 |
| SepSeptember | 83 | A | 20°C | 11 d | 10 h | Busy | 1 |
| OctOctober | 71 | B | 17°C | 15 d | 7 h | Shoulder | 1 |
| NovNovember | 60 | C | 13°C | 16 d | 6 h | Quiet | 1 |
| DecDecember | 53 | D | 11°C | 17 d | 4 h | Quiet | — |
What's on in Saint Helier through the year
Festivals, natural spectacles, holidays and the seasons to watch out for — curated and sourced. The month pages carry the detail.
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