July brings 22°C daytime highs, 18mm of precipitation across about 3 wet days and 15.6 hours of daylight — best for hiking, cycling and reliable sunshine. The strongest run of the year is June to August. January is the quietest month: quiet and local, and still good for quiet and local.
Long-run climate normals for Jersey. Month ratings compare months within Jersey only — they are not a ranking of Jersey against other destinations, and they are not a forecast for a specific year.
Conditions on this page are recalculated from the latest forecast every time it is opened, for the current date in the location's own time zone. Showing .
| Best month | July — Hiking, Cycling, Reliable sunshine |
| Best 3-month window | June–August |
| Quietest month | January — Quiet and local |
| Driest month | June — 18mm |
| Wettest month | December — 90mm |
| Warmest / coolest | July 22°C / January 10°C |
| Seasonality | Strongly seasonal — the months feel like different places |
| Annual rainfall | 648mm over roughly 108 rain days |
January gets roughly 400% more precipitation than July — 90mm against 18mm. That difference, more than temperature, is what changes how a day here feels.
Daytime highs only move 12°C across the whole year (10–22°C), so timing matters far less here than rainfall does.
June gives you 16 hours of daylight against just 8 in December — a 8-hour difference in how much you can actually fit into a day.
June is the driest month at 18mm across roughly 3 wet days, while December peaks at 90mm.
June is almost as good as July, but usually quieter and cheaper. If your dates are flexible, it is the easier trip.
Jersey changes character completely through the year — July and January are effectively two different destinations. Pick the month that matches what you want to do, not the highest-rated one.
Ratings compare months within Jersey, not against destinations worldwide: five stars means the best time to be here, not that Jersey beats anywhere else. Tags describe what the conditions actually suit.
| Month | Rating | High / Low | Precipitation | Wet days | Sun | Daylight | Best for |
|---|---|---|---|---|---|---|---|
| January | ★★☆☆☆ | 10°C / 6°C | 90mm | 15 | 4h | 8.4h | Quiet and local |
| February | ★★☆☆☆ | 11°C / 7°C | 78mm | 13 | 5h | 9.8h | Low-angle light · Quiet and local |
| March | ★★★☆☆ | 13°C / 9°C | 66mm | 11 | 6h | 11.7h | Hiking · Cycling · Spring greenery |
| April | ★★★★☆ | 16°C / 12°C | 42mm | 7 | 8h | 13.5h | Hiking · Cycling · Spring greenery |
| May | ★★★★★ | 19°C / 15°C | 30mm | 5 | 10h | 15.2h | Hiking · Cycling · Reliable sunshine |
| June | ★★★★★ | 21°C / 17°C | 18mm | 3 | 11h | 16h | Hiking · Cycling · Reliable sunshine |
| July | ★★★★★ | 22°C / 18°C | 18mm | 3 | 11h | 15.6h | Hiking · Cycling · Reliable sunshine |
| August | ★★★★★ | 21°C / 17°C | 18mm | 3 | 11h | 14.2h | Hiking · Cycling · Reliable sunshine |
| September | ★★★★☆ | 19°C / 15°C | 42mm | 7 | 9h | 12.3h | Hiking · Cycling · Reliable sunshine |
| October | ★★★☆☆ | 16°C / 12°C | 66mm | 11 | 6h | 10.5h | Hiking · Cycling · Autumn colour |
| November | ★★☆☆☆ | 13°C / 9°C | 90mm | 15 | 4h | 8.8h | Autumn colour · Low-angle light · Quiet and local |
| December | ★★☆☆☆ | 11°C / 7°C | 90mm | 15 | 4h | 8h | Quiet and local |
| You are planning | Pick | Why |
|---|---|---|
| Sun & beach days | July | 11h daily sunshine, 22°C highs and only 3 rain days. |
| City walking & sightseeing | July | 22°C highs with 15.6h of daylight — long days without heat fatigue. |
| Photography & light | June | 11h of sun and 16h daylight give the widest window for golden-hour work. |
| Value & fewer crowds | May | Scores 84/100 — close to peak conditions but outside the busiest window. |
| Cooler-weather travel | April | 16°C highs and 12°C nights suit anyone who dislikes heat. |
Each month in Jersey is described from long-run climate normals and then rated relative to the other eleven months in the same city. A five-star January in a cold destination means January is one of the best times to be there — not that it beats a Mediterranean summer.
| Factor | Weight | What it measures |
|---|---|---|
| Temperature | Described | Average daytime high and overnight low for the month, shown as measured rather than judged. |
| Precipitation | Described | Monthly millimetres and wet-day count, labelled as snow or rain/snow where temperatures make that the likely phase. |
| Sunshine & daylight | Described | Average daily sunshine hours and astronomical daylight length at mid-month, from the city’s latitude. |
| “Best for” tags | Derived | Applied only when the conditions genuinely support the activity — snow depth-friendly cold for skiing, 13–24°C and low rain risk for hiking, dark evenings at high latitude for aurora. A month with few strong use cases gets fewer tags rather than padded ones. |
| Star rating | Relative | Ranks the month against the other eleven months in the same city. Never a comparison between cities. |
Figures are long-run climate averages, not a forecast for a specific year. This city has no published month-by-month normals on file, so monthly temperatures are interpolated from its summer and winter averages and rainfall is modelled from rain-day frequency.
July is the best all-round month in Jersey: 22°C highs, 18mm of precipitation and 15.6 hours of daylight, which suits hiking, cycling and reliable sunshine. The strongest three-month window is June to August.
January — 10°C highs, 90mm of precipitation over roughly 15 days and 8.4 hours of daylight. It is the cheapest and least crowded time to go, and it still works for quiet and local.
June is the driest month at 18mm over about 3 rain days, against 90mm in December. Across the year Jersey records around 648mm.
Yes, but the months are genuinely different trips. July suits hiking, cycling and reliable sunshine, while January suits quiet and local. Pick the month that matches what you want to do.
Daylight ranges from 8 hours in December to 16 hours in June, calculated from the city's latitude.