As of 19:05 BST

Weather in Trethellan Water

+19°Weather now

Trethellan Water, Saturday, 8 August, 19:05

Overcast. Feels like 19°C. High 23°C, low 10°C.

Pressure1016 mb
Wind11 mph SE
Humidity63%
Visibility6.2 mi
Dew point12°C
Sun, 09+13 ° /24 °0Mainly clear
+24 °Mainly clear

Trethellan Water, Sunday, 9 August

Mainly clear. High 24°C, low 13°C.

Pressure1016 mb
Wind9 mph NW
Humidity50%
Visibility6.2 mi
Dew point11°C
Mon, 10+14 ° /21 °0Partly cloudy
+21 °Partly cloudy

Trethellan Water, Monday, 10 August

Partly cloudy. High 21°C, low 14°C.

Pressure1021 mb
Wind10 mph N
Humidity61%
Visibility6.2 mi
Dew point13°C
Tue, 11+14 ° /23 °0Clear sky
+23 °Clear sky

Trethellan Water, Tuesday, 11 August

Clear sky. High 23°C, low 14°C.

Pressure1022 mb
Wind15 mph SE
Humidity54%
Visibility6.2 mi
Dew point14°C
Wed, 12+16 ° /25 °0Partly cloudy
+25 °Partly cloudy

Trethellan Water, Wednesday, 12 August

Partly cloudy. High 25°C, low 16°C.

Pressure1020 mb
Wind18 mph SE
Humidity40%
Visibility6.2 mi
Dew point9°C
Thu, 13+15 ° /22 °0Clear sky
+22 °Clear sky

Trethellan Water, Thursday, 13 August

Clear sky. High 22°C, low 15°C.

Pressure1019 mb
Wind14 mph NW
Humidity53%
Visibility—
Dew point12°C
Fri, 14+16 ° /21 °0Overcast
+21 °Overcast

Trethellan Water, Friday, 14 August

Overcast. High 21°C, low 16°C.

Pressure1019 mb
Wind13 mph W
Humidity77%
Visibility—
Dew point16°C
Sat, 15+14 ° /21 °0Overcast
+21 °Overcast

Trethellan Water, Saturday, 15 August

Overcast. High 21°C, low 14°C.

Pressure1018 mb
Wind13 mph N
Humidity61%
Visibility—
Dew point12°C
Sun, 16+14 ° /20 °0.8Light rain
+20 °Light rain

Trethellan Water, Sunday, 16 August

Light rain. High 20°C, low 14°C.

Pressure1016 mb
Wind13 mph SW
Humidity62%
Visibility—
Dew point12°C
Mon, 17+14 ° /18 °0Partly cloudy
+18 °Partly cloudy

Trethellan Water, Monday, 17 August

Partly cloudy. High 18°C, low 14°C.

Pressure1017 mb
Wind17 mph NW
Humidity58%
Visibility—
Dew point9°C
Tue, 18+15 ° /17 °0.6Light rain
+17 °Light rain

Trethellan Water, Tuesday, 18 August

Light rain. High 17°C, low 15°C.

Pressure1014 mb
Wind19 mph NW
Humidity65%
Visibility—
Dew point10°C
Wed, 19+13 ° /19 °0.1Light rain
+19 °Light rain

Trethellan Water, Wednesday, 19 August

Light rain. High 19°C, low 13°C.

Pressure1016 mb
Wind13 mph NW
Humidity60%
Visibility—
Dew point10°C
Thu, 20+15 ° /18 °1.2Light rain
+18 °Light rain

Trethellan Water, Thursday, 20 August

Light rain. High 18°C, low 15°C.

Pressure1011 mb
Wind20 mph NW
Humidity63%
Visibility—
Dew point10°C
Fri, 21+13 ° /17 °1Light rain
+17 °Light rain

Trethellan Water, Friday, 21 August

Light rain. High 17°C, low 13°C.

Pressure1018 mb
Wind17 mph NW
Humidity62%
Visibility—
Dew point9°C
Sat, 22+15 ° /18 °0Overcast
+18 °Overcast

Trethellan Water, Saturday, 22 August

Overcast. High 18°C, low 15°C.

Pressure1020 mb
Wind26 mph W
Humidity70%
Visibility—
Dew point12°C
Sun, 23+13 ° /17 °0.1Light rain
+17 °Light rain

Trethellan Water, Sunday, 23 August

Light rain. High 17°C, low 13°C.

Pressure1026 mb
Wind18 mph NW
Humidity59%
Visibility—
Dew point8°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 Trethellan Water 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 Trethellan Water 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.