Weather in Isles of Scilly, United Kingdom in September

So you're interested in going to Isles of Scilly, United Kingdom in September

September is a slightly cold and dry time for sunbathing in Isles of Scilly. September is too cold for swimming in Isles of Scilly for any length of time, unless you have a wetsuit. Consider visiting Isles of Scilly in the months of June, July, August, September, for the best beach weather. Also consider one of our other suggestions for September.

Temperature in Isles of Scilly in September

The average maximum temperature in Isles of Scilly in September is 17°. The average maximum temperature is 19° in the previous month and 15° in the next month.

The average temperature in Isles of Scilly 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 Isles of Scilly in September is 14°. The minimum temperature is 15° in the previous month and 13° in the next month.

Sunshine in Isles of Scilly in September

The average day light hours per day in Isles of Scilly in September are 12.6 and there are 6.3 hours of sunshine per day on average during September making it a quite sunny month with some cloud cover.

The ultraviolet index in Isles of Scilly in September is typically 4.4 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 Isles of Scilly in September

The average sea water temperature in Isles of Scilly in September is 15.8° which is cold for swimming, a full wet suit is required to spend any length of time in the sea.

Rainfall in Isles of Scilly in September

The average total rainfall in Isles of Scilly in September is 0.7cm and on average there are 9.9 rainy days in September making it a dry time to visit the beach.

Humidity in Isles of Scilly in September

The maximum dew point (an indicator of humidity) in Isles of Scilly in September is 14° which is comfortable for everyone. The dew point is 15° in the previous month and 12° in the next month.

The average maximum relative humidity in Isles of Scilly in September is typically 91.5%. The maximum relative humidity is 91.7% in the previous month and 91% in the next month.

The average relative humidity in Isles of Scilly in September is typically 82.6%. The average relative humidity is 80.9% in the previous month and 82.5% in the next month.

Wind Speed in Isles of Scilly in September

The average maximum wind speed in Isles of Scilly in September is typically 31kmh. The average maximum wind speed is 30kmh in the previous month and 36kmh in the next month.

The average wind speed in Isles of Scilly in September is typically 22kmh. The average wind speed is 21kmh in the previous month and 27kmh in the next month.

The average wind direction in Isles of Scilly in September is from the West-Northwest.