As of 20:52 BST

Weather in Llanuwchllyn

+7°

Llanuwchllyn, Wednesday, 7 October, 20:52

Partly cloudy. Feels like 5°C. High 12°C, low 8°C.

Pressure1018 mb

Wind7 mph NW

Humidity87%

Visibility6.2 mi

Dew point6°C

Detailed hourly forecast

The month ahead in Llanuwchllyn: daytime temperatures averaging +12.5° and +6.4° overnight — that is 1.3° below the climate average for October. Rain is expected on 12 days (around 103 mm), against a normal of 9 days and 68 mm. The warmest day should be 12 October (+17.1°), the coolest 18 October (+2.6°).

+12.5°/+6.4°

Average day / night

−1.3°

Below average

12 / 9

Wet days / normal

103 mm

Rainfall this month

Ten-day blocks against the climate average

Period	Forecast (day)	Average	Difference
7 October – 16 October	+13.6°	+14.2°	-0.6°
17 October – 26 October	+10.8°	+12.9°	-2.1°
27 October – 5 November	near average	+11.9°	—

October records over 66 years

+24.3°1 October 2011All-time high

-1.9°30 October 2018All-time low

Climate averages and records are calculated from the nearest reference point — Dolgellau (19.1 km away).

Thu, 08+8 ° /15 °

4.6

+15 °

Llanuwchllyn, Thursday, 8 October

Rain. High 15°C, low 8°C.

Pressure1024 mb

Wind10 mph NW

Humidity76%

Visibility6.2 mi

Dew point6°C

Fri, 09+10 ° /15 °

24.1

+15 °

Llanuwchllyn, Friday, 9 October

Heavy rain. High 15°C, low 10°C.

Pressure1010 mb

Wind14 mph W

Humidity98%

Visibility6.2 mi

Dew point11°C

Sat, 10+8 ° /11 °

6.1

+11 °

Llanuwchllyn, Saturday, 10 October

Light rain. High 11°C, low 8°C.

Pressure1012 mb

Wind17 mph W

Humidity91%

Visibility6.2 mi

Dew point7°C

Sun, 11+7 ° /12 °

1.2

+12 °

Llanuwchllyn, Sunday, 11 October

Light rain. High 12°C, low 7°C.

Pressure1014 mb

Wind8 mph W

Humidity84%

Visibility6.2 mi

Dew point7°C

Mon, 12+8 ° /17 °

4.9

+17 °

Llanuwchllyn, Monday, 12 October

Light rain. High 17°C, low 8°C.

Pressure1009 mb

Wind15 mph SW

Humidity98%

Visibility—

Dew point15°C

Tue, 13+8 ° /16 °

6.9

+16 °

Llanuwchllyn, Tuesday, 13 October

Rain. High 16°C, low 8°C.

Pressure1020 mb

Wind15 mph SW

Humidity77%

Visibility—

Dew point10°C

Wed, 14+8 ° /14 °

0.1

+14 °

Llanuwchllyn, Wednesday, 14 October

Light rain. High 14°C, low 8°C.

Pressure1029 mb

Wind11 mph SW

Humidity80%

Visibility—

Dew point10°C

Thu, 15+5 ° /13 °

2.4

+13 °

Llanuwchllyn, Thursday, 15 October

Light rain. High 13°C, low 5°C.

Pressure1016 mb

Wind9 mph SW

Humidity97%

Visibility—

Dew point12°C

Fri, 16+4 ° /11 °

+11 °

Llanuwchllyn, Friday, 16 October

Overcast. High 11°C, low 4°C.

Pressure1025 mb

Wind5 mph SW

Humidity68%

Visibility—

Dew point4°C

Sat, 17+4 ° /12 °

1.2

+12 °

Llanuwchllyn, Saturday, 17 October

Light rain. High 12°C, low 4°C.

Pressure1010 mb

Wind9 mph SW

Humidity85%

Visibility—

Dew point9°C

Sun, 18+3 ° /12 °

0.8

+12 °

Llanuwchllyn, Sunday, 18 October

Light rain. High 12°C, low 3°C.

Pressure1012 mb

Wind13 mph S

Humidity61%

Visibility—

Dew point2°C

Mon, 19+7 ° /13 °

+13 °

Llanuwchllyn, Monday, 19 October

Rain. High 13°C, low 7°C.

Pressure996 mb

Wind17 mph SW

Humidity89%

Visibility—

Dew point6°C

Tue, 20+6 ° /8 °

14.1

+8 °

Llanuwchllyn, Tuesday, 20 October

Rain. High 8°C, low 6°C.

Pressure996 mb

Wind18 mph SW

Humidity92%

Visibility—

Dew point6°C

Wed, 21+4 ° /9 °

5.2

+9 °

Llanuwchllyn, Wednesday, 21 October

Light rain. High 9°C, low 4°C.

Pressure1006 mb

Wind12 mph W

Humidity79%

Visibility—

Dew point5°C

Thu, 22+5 ° /11 °

5.7

+11 °

Llanuwchllyn, Thursday, 22 October

Rain. High 11°C, low 5°C.

Pressure1005 mb

Wind9 mph S

Humidity71%

Visibility—

Dew point5°C

Days 17 onward are based on 60-year climate statistics

Fri, 23+8 ° /13 °

3.5

+13 °

Llanuwchllyn, Friday, 23 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low8°C

Average rainfall3.5 mm

Chance of rain55%

Warmest on record+18° (1996)

Coldest on record+1° (1993)

Sat, 24+8 ° /13 °

5.6

+13 °

Llanuwchllyn, Saturday, 24 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low8°C

Average rainfall5.6 mm

Chance of rain55%

Warmest on record+17° (1995)

Coldest on record+2° (2002)

Sun, 25+8 ° /13 °

+13 °

Llanuwchllyn, Sunday, 25 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low8°C

Average rainfall6 mm

Chance of rain62%

Warmest on record+16° (2013)

Coldest on record-1° (2010)

Mon, 26+8 ° /13 °

4.8

+13 °

Llanuwchllyn, Monday, 26 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low8°C

Average rainfall4.8 mm

Chance of rain55%

Warmest on record+17° (2005)

Coldest on record+1° (1997)

Tue, 27+8 ° /13 °

6.1

+13 °

Llanuwchllyn, Tuesday, 27 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low8°C

Average rainfall6.1 mm

Chance of rain63%

Warmest on record+20° (2005)

Coldest on record+0° (2003)

Wed, 28+8 ° /12 °

6.4

+12 °

Llanuwchllyn, Wednesday, 28 October

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low8°C

Average rainfall6.4 mm

Chance of rain60%

Warmest on record+17° (2014)

Coldest on record+1° (2008)

Thu, 29+7 ° /12 °

+12 °

Llanuwchllyn, Thursday, 29 October

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low7°C

Average rainfall5 mm

Chance of rain55%

Warmest on record+18° (2022)

Coldest on record-1° (2018)

Fri, 30+8 ° /12 °

5.1

+12 °

Llanuwchllyn, Friday, 30 October

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low8°C

Average rainfall5.1 mm

Chance of rain62%

Warmest on record+17° (2015)

Coldest on record-2° (2018)

Sat, 31+8 ° /13 °

+13 °

Llanuwchllyn, Saturday, 31 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low8°C

Average rainfall6 mm

Chance of rain63%

Warmest on record+20° (2014)

Coldest on record0° (1988)

Sun, 01+8 ° /12 °

6.6

+12 °

Llanuwchllyn, Sunday, 1 November

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low8°C

Average rainfall6.6 mm

Chance of rain65%

Warmest on record+17° (2015)

Coldest on record0° (1988)

Mon, 02+8 ° /12 °

7.4

+12 °

Llanuwchllyn, Monday, 2 November

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low8°C

Average rainfall7.4 mm

Chance of rain62%

Warmest on record+16° (2005)

Coldest on record+1° (2006)

Tue, 03+7 ° /11 °

5.6

+11 °

Llanuwchllyn, Tuesday, 3 November

Climate average for this date — the mean of the last 60 years.

Average high11°C

Average low7°C

Average rainfall5.6 mm

Chance of rain65%

Warmest on record+16° (2011)

Coldest on record-2° (2006)

Wed, 04+7 ° /11 °

4.1

+11 °

Llanuwchllyn, Wednesday, 4 November

Climate average for this date — the mean of the last 60 years.

Average high11°C

Average low7°C

Average rainfall4.1 mm

Chance of rain53%

Warmest on record+15° (2025)

Coldest on record-1° (1968)

Thu, 05+7 ° /11 °

4.8

+11 °

Llanuwchllyn, Thursday, 5 November

Climate average for this date — the mean of the last 60 years.

Average high11°C

Average low7°C

Average rainfall4.8 mm

Chance of rain52%

Warmest on record+18° (2025)

Coldest on record0° (1965)

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 Llanuwchllyn 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 Llanuwchllyn 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.