Castletown weather, climate and best time to visit

Best time to visit Castletown

The best time to visit in Castletown in Isle of Man is from July until September, when you will have a soft temperature, but limited rainfall. The highest average temperature in in Castletown is 16°C in July and the lowest is 8°C in January.

Castletown has the oceanic climate prevailing. If you want to know what the average temperature is in in Castletown or when most precipitation (rain or snow) falls, you can find a quick overview below. This way, you are well prepared. Our average monthly climate data is based on data from the past 30 years.

Average weather Castletown by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Temperature (°C) 8 8 8 10 12 14 16 16 15 14 12 10
Precipitation (mm) 29 24 32 20 23 24 32 37 30 42 52 45

Travel and stay Castletown

Looking to book a flight to Castletown? Hop on one of these airlines.

14 day weather forecast Castletown

The weather for in Castletown will be 16° till 14° degrees in the next 14 days with several days chance of light rain showers or even quite a bit of rain.

Weather forecast this week

Monday 20 Sep Water Precip Chance Wind UV
16°
13°
15° 0 mm 0% 3 m/s 3
Tuesday 21 Sep Water Precip Chance Wind UV
16°
15°
15° 0 mm 0% 4 m/s 2
Wednesday 22 Sep Water Precip Chance Wind UV
17°
16°
15° 0.1 mm 10% 8 m/s 3
Thursday 23 Sep Water Precip Chance Wind UV
14°
10°
15° 0.4 mm 25% 3 m/s 3
Friday 24 Sep Water Precip Chance Wind UV
16°
11°
15° 0 mm 0% 4 m/s 3
Saturday 25 Sep Water Precip Chance Wind UV
16°
11°
15° 4.3 mm 80% 6 m/s 2
Sunday 26 Sep Water Precip Chance Wind UV
12°
15° 5.3 mm 85% 8 m/s 3

Weather forecast next week

Monday 27 Sep Water Precip Chance Wind UV
11°
15° 1.6 mm 60% 6 m/s 3
Tuesday 28 Sep Water Precip Chance Wind UV
12°
15° 2.1 mm 70% 6 m/s 1
Wednesday 29 Sep Water Precip Chance Wind UV
14°
15° 7.7 mm 90% 6 m/s 1
Thursday 30 Sep Water Precip Chance Wind UV
11°
15° 0.8 mm 45% 12 m/s 0
Friday 1 Oct Water Precip Chance Wind UV
12°
15° 0.1 mm 20% 4 m/s 0
Saturday 2 Oct Water Precip Chance Wind UV
13°
15° 0.3 mm 20% 3 m/s 0
Sunday 3 Oct Water Precip Chance Wind UV
14°
10°
15° 0.4 mm 25% 2 m/s 0

Climate Castletown

Castletown has the oceanic climate prevailing. There is rainfall during all months of the year. The average annual temperature for Castletown is 12° degrees and there is about 390 mm of rain in a year. It is dry for 160 days a year with an average humidity of 81% and an UV-index of 3.

Climate table of Castletown

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°C) 8 8 8 10 12 14 16 16 15 14 12 10
Night temp. (°C) 7 6 7 8 10 13 14 15 14 12 10 8
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 29 24 32 20 23 24 32 37 30 42 52 45
Days with rain 15 13 13 13 13 11 16 16 13 17 17 17
Days with snow - 1 - - - - - - - - - -
Dry days 16 14 18 17 18 19 15 15 17 14 13 14
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 4 4 6 8 8 8 8 8 7 4 4 4
Wind force (Bft) 5 5 5 4 4 4 4 4 5 5 5 5
UV-index 2 2 2 3 4 4 4 4 4 4 3 3

Castletown weather by month

What is the average weather like in a given month for Castletown? Let's find out! Click on a month to check all the monthly averages for sunshine, temperature highs and lows, percentage chance of rain per day, snowfall accumulation and number of rainy days.

Weather experiences Castletown

Already been to Castletown?

Submit your Castletown weather experience today and get a chance to win £100!

Your email will not be included in the review and will not be passed on to third parties.

By submitting the data you agree to our privacy policy

Frequently asked questions

Where is Castletown?

Castletown is located in Isle of Man. It lies in a straight line at 260 miles from London.

The coordinates of Castletown are:

  • Latitude: 54.083333
  • Longitude: -4.65

The GPS coordinates are 54° 4' N, 4° 39' W

How long is the flight to Castletown?

The flight time from London-Heathrow to Castletown is approximately 1 h. 30 min.

What are the nearest airports to Castletown?

These are the airports closests to Castletown:

  • Isle of Man Airport (1 mi) – Castletown
  • George Best Belfast City Airport (62 mi) – Belfast
  • Blackpool International Airport (69 mi) – Blackpool

How big is Castletown?

The area of Castletown is around 777 mi².

What is the area code of Castletown?

The area code to call Castletown is +44-1624.