Weather in Channel Islands in September

So you're interested in going to Channel Islands in September

September is a slightly cold and slightly rainy time for sunbathing in Channel Islands. September is a little too cold to enjoy swimming in Channel Islands for any length of time. Consider visiting Channel Islands in the months of June, July, August, September, for the best beach weather. Also consider one of our other suggestions for September.

Temperature in Channel Islands in September

The average maximum temperature in Channel Islands in September is 18°. The average maximum temperature is 19° in the previous month and 16° in the next month.

The average temperature in Channel Islands in September is 16°. The average temperature ranges is 17° in the previous month and 14° in the next month.

The average minimum temperature in Channel Islands in September is 13°. The minimum temperature is 14° in the previous month and 12° in the next month.

Sunshine in Channel Islands in September

The average day light hours per day in Channel Islands in September are 12.6 and there are 6.1 hours of sunshine per day on average during September making it a quite sunny month with some cloud cover.

The ultraviolet index in Channel Islands in September is typically 4.5 during September. An ultraviolet index reading of 3 to 5 indicates there is a moderate risk of harm from unprotected sun exposure. Keep out of the sun during the strongest hours around midday when unprotected skin risks burning in less than 30 minutes. For the sensitive wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days, and after swimming or sweating. Tanning for hours is possible with the right application of sun cream. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in Channel Islands in September

The average sea water temperature in Channel Islands in September is 17.5° which is cool for swimming, shorty wetsuit may help you extend your time in the water.

Rainfall in Channel Islands in September

The average total rainfall in Channel Islands in September is 0.5cm and on average there are 13 rainy days in September making it a slightly wet time to visit the beach.

Humidity in Channel Islands in September

The maximum dew point (an indicator of humidity) in Channel Islands in September is 14° which is comfortable for everyone. The dew point is 15° in the previous month and 13° in the next month.

The average maximum relative humidity in Channel Islands in September is typically 94.2%. The maximum relative humidity is 95.5% in the previous month and 93.7% in the next month.

The average relative humidity in Channel Islands in September is typically 81.2%. The average relative humidity is 82.2% in the previous month and 83% in the next month.

Wind Speed in Channel Islands in September

The average maximum wind speed in Channel Islands in September is typically 28kmh. The average maximum wind speed is 27kmh in the previous month and 32kmh in the next month.

The average wind speed in Channel Islands in September is typically 19kmh. The average wind speed is 18kmh in the previous month and 22kmh in the next month.

The average wind direction in Channel Islands in September is from the West-Northwest.