Climate averages 1991–2020
Saint Helier weather
in June.
A mild, moderately wet month: the 4th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a mild month in Saint Helier: daytime highs average 16.1°C and nights cool to about 13.4°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 50 mm of rain on roughly 9 days, which makes June a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 16 h 09 min on an average June day.
The nearest other city in this atlas is Rennes (124 km away). In June its highs average 21.2°C, 5.1°C warmer than Saint Helier, with 53 mm of rain.
From June to July, average highs rise by 1.8°C to 17.9°C, and monthly rainfall falls from 50 mm to 48 mm.
The annual picture
June in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Saint Helier climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.1°C6.8°C | 6.8°C | 110 | 15.8 | 8.79 h |
| February | 8.7°C6.3°C | 6.3°C | 82 | 13.0 | 10.110 h |
| March | 9.7°C7.3°C | 7.3°C | 69 | 12.4 | 11.912 h |
| April | 11.3°C8.6°C | 8.6°C | 57 | 10.5 | 13.714 h |
| May | 13.7°C11.0°C | 11.0°C | 53 | 9.4 | 15.315 h |
| June, selected | 16.1°C13.4°C | 13.4°C | 50 | 8.7 | 16.216 h |
| July | 17.9°C15.4°C | 15.4°C | 48 | 9.1 | 15.816 h |
| August | 18.5°C16.1°C | 16.1°C | 63 | 9.8 | 14.414 h |
| September | 17.5°C15.1°C | 15.1°C | 77 | 11.0 | 12.713 h |
| October | 15.2°C12.9°C | 12.9°C | 122 | 15.5 | 10.811 h |
| November | 12.2°C10.0°C | 10.0°C | 132 | 17.6 | 9.29 h |
| December | 10.0°C7.7°C | 7.7°C | 138 | 16.7 | 8.38 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
June in nearby cities
- Rennes in JuneFrance · 124 kmHigh 21.2°C · Low 12.4°C · 53 mm rain
- Caen in JuneFrance · 127 kmHigh 20.4°C · Low 12.3°C · 62 mm rain
- Le Havre in JuneFrance · 164 kmHigh 18.9°C · Low 12.9°C · 60 mm rain
- Poole in JuneUnited Kingdom · 170 kmHigh 18.0°C · Low 12.3°C · 51 mm rain
- Bournemouth in JuneUnited Kingdom · 171 kmHigh 18.1°C · Low 12.3°C · 51 mm rain
- Portsmouth in JuneUnited Kingdom · 193 kmHigh 18.7°C · Low 11.8°C · 51 mm rain
- Brest, France in JuneFrance · 196 kmHigh 17.3°C · Low 12.9°C · 47 mm rain
- Plymouth in JuneUnited Kingdom · 197 kmHigh 17.6°C · Low 11.9°C · 61 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Saint Helier) is explained once on the Saint Helier year overview and on the Sources, method and limits page.