Normal weather in Castletown in September
The weather in Castletown in September has an average temperature of around 19°C during the day. On average, September sees 39 mm of rain in Castletown. The wind speed is 5 Beaufort and mainly comes from South.
After August, September in Castletown starts with a temperature of 20°C and ends around October at 17°C.
September averages for Castletown
![]() | 19°C |
![]() | 21°C |
![]() | 17°C |
![]() | 39 mm |
![]() | 14 days |
Temperature per day in September in Castletown
This graph shows the average daily maximum temperatures in September in Castletown, indicated in degrees Celsius.
Precipitation per day in September in Castletown
This graph shows the average daily precipitation in September in Castletown, indicated in millimeters.
UV index per day in September in Castletown
This graph shows the average daily UV index in September in Castletown.
Yearly temperature in September in Castletown
This graph shows the average yearly temperature in September in Castletown, measured in degrees Celsius, over the past years.
Yearly total precipitation in September in Castletown
This graph shows the average yearly precipitation in millimeters in September in Castletown, over the past years.
Average daily weather in September
Click on a day to get more information about the average weather on that day.
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Average weather in Castletown per month
Click on a month below to see in detail how the weather typically is in Castletown and what to expect. Based on the historical weather data of Castletown, you can view the average temperature, precipitation, wind, and UV index for each day of the month.