>>St Helier average temperature
>>St Helier Weather by month // weather averages
The climate here is mild, and generally warm and temperate. St Helier has a significant amount of rainfall during the year. This is true even for the driest month. The climate here is classified as Cfb by the Köppen-Geiger system. The average annual temperature is 10.7 °C in St Helier. In a year, the average rainfall is 648 mm.
Climate graph // Weather by Month St Helier
Precipitation is the lowest in February, with an average of 41 mm. With an average of 64 mm, the most precipitation falls in November.
average temperature St Helier
At an average temperature of 18.0 °C, July is the hottest month of the year. January has the lowest average temperature of the year. It is 4.4 °C.
St Helier Weather by month // weather averages
| Avg. Temperature (°C) | Avg. Temperature (°F) | Precipitation / Rainfall (mm) | |
|---|---|---|---|
| January | 4.4 | 39.9 | 60 |
| February | 4.8 | 40.6 | 41 |
| March | 6.8 | 44.2 | 49 |
| April | 9.3 | 48.7 | 47 |
| May | 12.7 | 54.9 | 50 |
| June | 16.1 | 61.0 | 51 |
| July | 18 | 64.4 | 48 |
| August | 17.6 | 63.7 | 54 |
| September | 14.8 | 58.6 | 58 |
| October | 11.3 | 52.3 | 63 |
| November | 7.3 | 45.1 | 64 |
| December | 5.2 | 41.4 | 63 |
| January | February | March | April | May | June | July | August | September | October | November | December | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg. Temperature (°C) | 4.4 | 4.8 | 6.8 | 9.3 | 12.7 | 16.1 | 18 | 17.6 | 14.8 | 11.3 | 7.3 | 5.2 |
| Min. Temperature (°C) | 1.3 | 1.7 | 2.9 | 5.2 | 8.1 | 11.3 | 13.1 | 12.6 | 10.2 | 7.3 | 4 | 2.2 |
| Max. Temperature (°C) | 7.5 | 7.9 | 10.7 | 13.4 | 17.3 | 20.9 | 23 | 22.6 | 19.5 | 15.3 | 10.7 | 8.3 |
| Avg. Temperature (°F) | 39.9 | 40.6 | 44.2 | 48.7 | 54.9 | 61.0 | 64.4 | 63.7 | 58.6 | 52.3 | 45.1 | 41.4 |
| Min. Temperature (°F) | 34.3 | 35.1 | 37.2 | 41.4 | 46.6 | 52.3 | 55.6 | 54.7 | 50.4 | 45.1 | 39.2 | 36.0 |
| Max. Temperature (°F) | 45.5 | 46.2 | 51.3 | 56.1 | 63.1 | 69.6 | 73.4 | 72.7 | 67.1 | 59.5 | 51.3 | 46.9 |
| Precipitation / Rainfall (mm) | 60 | 41 | 49 | 47 | 50 | 51 | 48 | 54 | 58 | 63 | 64 | 63 |
Between the driest and wettest months, the difference in precipitation is 23 mm. During the year, the average temperatures vary by 13.6 °C.