Castletown Weather in September

September in Castletown brings moderate temperatures, with daytime highs of 16°C (61°F) and nights around 11°C (52°F). Quite a bit of rainfall is expected, around 91 mm (3.6 in), so pack an umbrella.

Rainfall in Castletown in September

Typically, about 22 days will experience rainfall, with an average of 91 mm (3.6 in) for the month. Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.

Temperature in Castletown in September

Castletown in September gets highs of 16°C (61°F) during the day and drops to 11°C (52°F) at night. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 11°C (52°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Castletown in September

The city usually sees around 112 hours of sunlight, indicating a moderately sunny period.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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For a detailed overview over the year and the best time to visit the United Kingdom, check out our Castletown's climate page.

Castletown Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 16°C (61°F)  

Chance of Rain 72%  

Precipitation 91 mm (3.6 in)  

Rainy days 22 days  

Sunshine 112 hours *  

Percentage Sunshine 27% *  

* Data from: Strathy East, Scotland (36 KM, 22 Miles).

What to Wear in Castletown in September

The weather can be unpredictable in September, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Castletown in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

6/10

Walking

6/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Castletown's climate page.

More climate data for Castletown

Temperature Rainfall Sunshine

See the full Castletown climate overview or explore weather in the United Kingdom.