Castledawson weather

Our guide to the weather in Castledawson during September

15

Average high

3

UV Index

54mm

Monthly rainfall

88%

Humidity

We've looked at the most up-to-date weather data for Castledawson, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Castledawson weather in September.

What's the temperature like in Castledawson during September?

The temperature reaches around 15℃ during the daytime in September, falling away to 9℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.

Does it rain in Castledawson during September?

On average, there will be 5 rainy days during the month, amounting to 54.2mm in total. That's broadly comparable with the amount of rain we see in England during the summer months, and would be considered dry. You're not likely to see a thunderstorm during your trip.

Is it windy in Castledawson during September?

You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during September. With moderate air temperatures, any breeze will feel cool.

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Weather in Castledawson

Our month-by-month guide to the weather and climate in Castledawson

6.1

Castledawson weather in

January
7.1

Castledawson weather in

February
8.9

Castledawson weather in

March
11.2

Castledawson weather in

April
13.5

Castledawson weather in

May
16.3

Castledawson weather in

June
17.5

Castledawson weather in

July
17.0

Castledawson weather in

August
15.4

Castledawson weather in

September
12.4

Castledawson weather in

October
8.9

Castledawson weather in

November
6.4

Castledawson weather in

December