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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.
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).
Castletown Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Castletown - and find the best time to visit.
Best Places in the United Kingdom in September
Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month. See all of the United Kingdom in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
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.
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Swimming5/10 -
Cycling6/10 -
Walking6/10 -
Camping8/10 -
Outdoor sports9/10
Castletown 3-Day Forecast
More climate data for Castletown
See the full Castletown climate overview or explore weather in the United Kingdom.
Popular in September
Where to go in September - average daytime high across popular destinations.
London
20°C (68°F) Bath19°C (66°F) Torquay19°C (66°F) Manchester
18°C (64°F) York19°C (66°F) Edinburgh17°C (63°F) Blackpool17°C (63°F) Glasgow17°C (63°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Hike the South West Coast Path
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