As of 16:03 BST

Weather in Castletown

+23°

Castletown, Saturday, 8 August, 16:03

Partly cloudy. Feels like 24°C. High 23°C, low 12°C.

Pressure1016 mb

Wind15 mph S

Humidity66%

Visibility6.2 mi

Dew point17°C

Detailed hourly forecast

Sun, 09+15 ° /19 °

+19 °

Castletown, Sunday, 9 August

Light rain. High 19°C, low 15°C.

Pressure1014 mb

Wind12 mph SW

Humidity84%

Visibility6.2 mi

Dew point12°C

Mon, 10+12 ° /16 °

+16 °

Castletown, Monday, 10 August

Overcast. High 16°C, low 12°C.

Pressure1022 mb

Wind10 mph NW

Humidity73%

Visibility6.2 mi

Dew point10°C

Tue, 11+14 ° /19 °

+19 °

Castletown, Tuesday, 11 August

Partly cloudy. High 19°C, low 14°C.

Pressure1024 mb

Wind12 mph SE

Humidity77%

Visibility6.2 mi

Dew point12°C

Wed, 12+17 ° /19 °

+19 °

Castletown, Wednesday, 12 August

Overcast. High 19°C, low 17°C.

Pressure1022 mb

Wind7 mph SE

Humidity74%

Visibility6.2 mi

Dew point13°C

Thu, 13+16 ° /19 °

+19 °

Castletown, Thursday, 13 August

Mainly clear. High 19°C, low 16°C.

Pressure1019 mb

Wind8 mph S

Humidity86%

Visibility—

Dew point16°C

Fri, 14+15 ° /17 °

3.6

+17 °

Castletown, Friday, 14 August

Light rain. High 17°C, low 15°C.

Pressure1017 mb

Wind16 mph NW

Humidity92%

Visibility—

Dew point16°C

Sat, 15+14 ° /16 °

+16 °

Castletown, Saturday, 15 August

Mainly clear. High 16°C, low 14°C.

Pressure1019 mb

Wind18 mph NW

Humidity74%

Visibility—

Dew point10°C

Sun, 16+14 ° /16 °

0.1

+16 °

Castletown, Sunday, 16 August

Light rain. High 16°C, low 14°C.

Pressure1014 mb

Wind4 mph N

Humidity69%

Visibility—

Dew point10°C

Mon, 17+14 ° /16 °

1.5

+16 °

Castletown, Monday, 17 August

Light rain. High 16°C, low 14°C.

Pressure1014 mb

Wind15 mph NW

Humidity76%

Visibility—

Dew point11°C

Tue, 18+14 ° /16 °

0.5

+16 °

Castletown, Tuesday, 18 August

Light rain. High 16°C, low 14°C.

Pressure1011 mb

Wind19 mph NW

Humidity81%

Visibility—

Dew point12°C

Wed, 19+14 ° /15 °

0.1

+15 °

Castletown, Wednesday, 19 August

Light rain. High 15°C, low 14°C.

Pressure1014 mb

Wind19 mph NW

Humidity80%

Visibility—

Dew point11°C

Thu, 20+14 ° /17 °

+17 °

Castletown, Thursday, 20 August

Light rain. High 17°C, low 14°C.

Pressure1005 mb

Wind22 mph W

Humidity79%

Visibility—

Dew point12°C

Fri, 21+13 ° /16 °

4.9

+16 °

Castletown, Friday, 21 August

Rain. High 16°C, low 13°C.

Pressure1013 mb

Wind25 mph W

Humidity67%

Visibility—

Dew point8°C

Sat, 22+13 ° /15 °

3.3

+15 °

Castletown, Saturday, 22 August

Light rain. High 15°C, low 13°C.

Pressure1012 mb

Wind28 mph W

Humidity71%

Visibility—

Dew point9°C

Sun, 23+13 ° /15 °

0.8

+15 °

Castletown, Sunday, 23 August

Light rain. High 15°C, low 13°C.

Pressure1023 mb

Wind26 mph NW

Humidity72%

Visibility—

Dew point10°C

Questions about the month ahead

How accurate is a month-long forecast?

The first 16 days come from weather models — highly reliable for the first 3–5 days, gradually less so after that. Days 17 to 30 for Castletown are built from climate averages over the last 60 years, so they show typical weather for those dates rather than a specific forecast.

What does "above average" mean?

We compare the forecast with the climate average for exactly the same calendar days, calculated from 60 years of observations. The difference shows how the coming month compares with a typical one.

Where do the 66-year records come from?

These are real historical extremes recorded in Castletown since 1960: the highest and lowest temperature for each calendar date, with the year it happened.

How often is the 30-day forecast updated?

The forecast portion refreshes every hour. The climate portion is based on long-term data and stays stable.