As of 23:04 BST

Weather in Portland Bill

+19°

Portland Bill, Saturday, 8 August, 23:04

Partly cloudy. Feels like 19°C. High 23°C, low 13°C.

Pressure1016 mb

Wind9 mph E

Humidity72%

Visibility6.2 mi

Dew point13°C

Detailed hourly forecast

Sun, 09+16 ° /22 °

+22 °

Portland Bill, Sunday, 9 August

Clear sky. High 22°C, low 16°C.

Pressure1014 mb

Wind9 mph SW

Humidity57%

Visibility6.2 mi

Dew point11°C

Mon, 10+15 ° /21 °

+21 °

Portland Bill, Monday, 10 August

Overcast. High 21°C, low 15°C.

Pressure1020 mb

Wind7 mph W

Humidity72%

Visibility6.2 mi

Dew point15°C

Tue, 11+18 ° /20 °

+20 °

Portland Bill, Tuesday, 11 August

Clear sky. High 20°C, low 18°C.

Pressure1024 mb

Wind19 mph E

Humidity75%

Visibility6.2 mi

Dew point14°C

Wed, 12+18 ° /21 °

+21 °

Portland Bill, Wednesday, 12 August

Partly cloudy. High 21°C, low 18°C.

Pressure1022 mb

Wind18 mph E

Humidity73%

Visibility6.2 mi

Dew point15°C

Thu, 13+19 ° /21 °

+21 °

Portland Bill, Thursday, 13 August

Clear sky. High 21°C, low 19°C.

Pressure1018 mb

Wind15 mph E

Humidity77%

Visibility—

Dew point16°C

Fri, 14+19 ° /21 °

+21 °

Portland Bill, Friday, 14 August

Partly cloudy. High 21°C, low 19°C.

Pressure1018 mb

Wind19 mph SW

Humidity85%

Visibility—

Dew point17°C

Sat, 15+17 ° /21 °

+21 °

Portland Bill, Saturday, 15 August

Partly cloudy. High 21°C, low 17°C.

Pressure1015 mb

Wind17 mph W

Humidity79%

Visibility—

Dew point16°C

Sun, 16+17 ° /19 °

0.3

+19 °

Portland Bill, Sunday, 16 August

Light rain. High 19°C, low 17°C.

Pressure1018 mb

Wind12 mph N

Humidity81%

Visibility—

Dew point15°C

Mon, 17+17 ° /19 °

3.4

+19 °

Portland Bill, Monday, 17 August

Light rain. High 19°C, low 17°C.

Pressure1016 mb

Wind24 mph SW

Humidity80%

Visibility—

Dew point14°C

Tue, 18+17 ° /20 °

+20 °

Portland Bill, Tuesday, 18 August

Clear sky. High 20°C, low 17°C.

Pressure1015 mb

Wind20 mph NW

Humidity74%

Visibility—

Dew point14°C

Wed, 19+16 ° /18 °

+18 °

Portland Bill, Wednesday, 19 August

Overcast. High 18°C, low 16°C.

Pressure1016 mb

Wind19 mph SW

Humidity65%

Visibility—

Dew point10°C

Thu, 20+16 ° /19 °

+19 °

Portland Bill, Thursday, 20 August

Overcast. High 19°C, low 16°C.

Pressure1014 mb

Wind14 mph N

Humidity67%

Visibility—

Dew point11°C

Fri, 21+14 ° /20 °

+20 °

Portland Bill, Friday, 21 August

Overcast. High 20°C, low 14°C.

Pressure1012 mb

Wind20 mph N

Humidity60%

Visibility—

Dew point11°C

Sat, 22+15 ° /18 °

5.7

+18 °

Portland Bill, Saturday, 22 August

Light rain. High 18°C, low 15°C.

Pressure1019 mb

Wind19 mph N

Humidity75%

Visibility—

Dew point13°C

Sun, 23+16 ° /18 °

+18 °

Portland Bill, Sunday, 23 August

Light rain. High 18°C, low 16°C.

Pressure1021 mb

Wind12 mph NE

Humidity73%

Visibility—

Dew point12°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 Portland Bill 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 Portland Bill 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.