Isle of ManThe weather in December in Castletown
It's cool in December in Castletown with an average temperature of 10°C. Temperatures this month range from a low of 9°C to a high of 12°C. At night, you can expect temperatures between 5°C and 9°C.
Looking for sun? December isn’t a good month to be in Castletown. There’s too much chance of rain this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in December for Castletown, Isle of Man. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 18°C in 2023, Castletown reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was 2°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of -3°C to a highest value of 12°C.
Rainfall amount
In December, there is an average of 101 mm of precipitation, spread over 13 days. The wind speed is around 6 Bft, mostly coming from the Southwest.
Daily weather in December for Castletown
Click on any day in December to get detailed info about the usual weather on that day in Castletown. Check out the historical temperatures and precipitation over the past 10 years on this day.
December weather comparison
| Castletown | New York | |
|---|---|---|
| Average temperature | 10°C | 9°C |
| Max. temperature | 12°C | 12°C |
| Min. temperature | 5°C | -5°C |
| Total precipitation | 101 mm | 133 mm |
| Rainy days | 13 days | 17 days |
Start of December
The month of December starts in Castletown with cold temps, averaging around 11°C during the day and nights around 6°C.
Mid December
By mid-December, daytime temps stay steady at around 11°C, with nights around 7°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of December
By the end of December, the average daytime temperature in Castletown is around 11°C, while nighttime temps are about 7°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
UV index
The UV index is a maximum of 1 this month. That's a low value on the intensity scale of 1 to 11. The risk of sunburn is minimal at this time.
Check out the climate of Castletown for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in December in Castletown, Isle of Man. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in December in Castletown
Temperature in December in Castletown over the years
Precipitation charts
These charts show the average amount of precipitation in December in Castletown, Isle of Man. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in December in Castletown
Total precipitation in December in Castletown over the years
Daily UV index in December in Castletown
This chart shows the average daily UV index in December in Castletown, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in December in Castletown
Have you been to Castletown in December?
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Average weather in Castletown by month
Click on a month below to see detailed weather info for Castletown. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.