As of 16:14 BST

Weather in Charlestown

+19°

Charlestown, Saturday, 8 August, 16:14

Overcast. Feels like 19°C. High 19°C, low 13°C.

Pressure1012 mb

Wind2 mph S

Humidity68%

Visibility6.2 mi

Dew point13°C

Detailed hourly forecast

Sun, 09+12 ° /21 °

0.1

+21 °

Charlestown, Sunday, 9 August

Light rain. High 21°C, low 12°C.

Pressure1009 mb

Wind8 mph SW

Humidity60%

Visibility6.2 mi

Dew point9°C

Mon, 10+10 ° /16 °

+16 °

Charlestown, Monday, 10 August

Partly cloudy. High 16°C, low 10°C.

Pressure1020 mb

Wind13 mph N

Humidity53%

Visibility6.2 mi

Dew point6°C

Tue, 11+8 ° /14 °

+14 °

Charlestown, Tuesday, 11 August

Overcast. High 14°C, low 8°C.

Pressure1026 mb

Wind11 mph S

Humidity70%

Visibility6.2 mi

Dew point8°C

Wed, 12+13 ° /20 °

+20 °

Charlestown, Wednesday, 12 August

Overcast. High 20°C, low 13°C.

Pressure1019 mb

Wind16 mph S

Humidity67%

Visibility6.2 mi

Dew point12°C

Thu, 13+14 ° /21 °

1.1

+21 °

Charlestown, Thursday, 13 August

Light rain. High 21°C, low 14°C.

Pressure1015 mb

Wind14 mph SW

Humidity61%

Visibility—

Dew point13°C

Fri, 14+14 ° /16 °

+16 °

Charlestown, Friday, 14 August

Light rain. High 16°C, low 14°C.

Pressure1017 mb

Wind8 mph E

Humidity90%

Visibility—

Dew point14°C

Sat, 15+12 ° /16 °

+16 °

Charlestown, Saturday, 15 August

Overcast. High 16°C, low 12°C.

Pressure1018 mb

Wind11 mph S

Humidity68%

Visibility—

Dew point9°C

Sun, 16+12 ° /14 °

1.4

+14 °

Charlestown, Sunday, 16 August

Light rain. High 14°C, low 12°C.

Pressure1015 mb

Wind12 mph SE

Humidity95%

Visibility—

Dew point12°C

Mon, 17+12 ° /16 °

1.3

+16 °

Charlestown, Monday, 17 August

Light rain. High 16°C, low 12°C.

Pressure1010 mb

Wind8 mph S

Humidity72%

Visibility—

Dew point11°C

Tue, 18+13 ° /14 °

1.1

+14 °

Charlestown, Tuesday, 18 August

Light rain. High 14°C, low 13°C.

Pressure1010 mb

Wind6 mph E

Humidity88%

Visibility—

Dew point12°C

Wed, 19+11 ° /14 °

0.5

+14 °

Charlestown, Wednesday, 19 August

Light rain. High 14°C, low 11°C.

Pressure1013 mb

Wind8 mph NW

Humidity86%

Visibility—

Dew point12°C

Thu, 20+11 ° /12 °

4.9

+12 °

Charlestown, Thursday, 20 August

Light rain. High 12°C, low 11°C.

Pressure1001 mb

Wind12 mph N

Humidity91%

Visibility—

Dew point11°C

Fri, 21+10 ° /15 °

5.6

+15 °

Charlestown, Friday, 21 August

Light rain. High 15°C, low 10°C.

Pressure1006 mb

Wind28 mph NW

Humidity59%

Visibility—

Dew point6°C

Sat, 22+10 ° /15 °

+15 °

Charlestown, Saturday, 22 August

Light rain. High 15°C, low 10°C.

Pressure1004 mb

Wind20 mph NW

Humidity59%

Visibility—

Dew point6°C

Sun, 23+11 ° /14 °

0.8

+14 °

Charlestown, Sunday, 23 August

Light rain. High 14°C, low 11°C.

Pressure1017 mb

Wind20 mph NW

Humidity60%

Visibility—

Dew point6°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 Charlestown 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 Charlestown 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.