As of 09:45 BST

Weather in Glan-y-wern

+10°

Glan-y-wern, Thursday, 8 October, 09:45

Overcast. Feels like 8°C. High 13°C, low 8°C.

Pressure1023 mb

Wind11 mph NW

Humidity82%

Visibility6.2 mi

Dew point7°C

Detailed hourly forecast

The month ahead in Glan-y-wern: daytime temperatures averaging +14° and +10° overnight — that is 1° above the climate average for October. Rain is expected on 10 days (around 74 mm), against a normal of 9 days and 67 mm. The warmest day should be 21 October (+16.8°), the coolest 17 October (+6°).

+14°/+10°

Average day / night

+1°

Above average

10 / 9

Wet days / normal

74 mm

Rainfall this month

Ten-day blocks against the climate average

Period	Forecast (day)	Average	Difference
8 October – 17 October	+13.6°	+13.3°	+0.3°
18 October – 27 October	+14.6°	+12.2°	+2.4°
28 October – 6 November	near average	+11.1°	—

October records over 66 years

+22.7°1 October 2011All-time high

-1.5°25 October 2010All-time low

Climate averages and records are calculated from the nearest reference point — Harlech (4 km away).

Fri, 09+11 ° /16 °

14.4

+16 °

Glan-y-wern, Friday, 9 October

Rain. High 16°C, low 11°C.

Pressure1009 mb

Wind19 mph NW

Humidity91%

Visibility6.2 mi

Dew point13°C

Sat, 10+10 ° /12 °

3.6

+12 °

Glan-y-wern, Saturday, 10 October

Light rain. High 12°C, low 10°C.

Pressure1013 mb

Wind18 mph W

Humidity76%

Visibility6.1 mi

Dew point7°C

Sun, 11+10 ° /13 °

+13 °

Glan-y-wern, Sunday, 11 October

Overcast. High 13°C, low 10°C.

Pressure1015 mb

Wind6 mph W

Humidity66%

Visibility6.2 mi

Dew point6°C

Mon, 12+11 ° /16 °

8.4

+16 °

Glan-y-wern, Monday, 12 October

Light rain. High 16°C, low 11°C.

Pressure1013 mb

Wind16 mph S

Humidity89%

Visibility—

Dew point14°C

Tue, 13+12 ° /16 °

10.9

+16 °

Glan-y-wern, Tuesday, 13 October

Rain. High 16°C, low 12°C.

Pressure1018 mb

Wind20 mph S

Humidity98%

Visibility—

Dew point16°C

Wed, 14+11 ° /15 °

1.1

+15 °

Glan-y-wern, Wednesday, 14 October

Light rain. High 15°C, low 11°C.

Pressure1021 mb

Wind14 mph S

Humidity92%

Visibility—

Dew point12°C

Thu, 15+8 ° /13 °

17.8

+13 °

Glan-y-wern, Thursday, 15 October

Rain. High 13°C, low 8°C.

Pressure1016 mb

Wind16 mph N

Humidity86%

Visibility—

Dew point9°C

Fri, 16+7 ° /11 °

+11 °

Glan-y-wern, Friday, 16 October

Mainly clear. High 11°C, low 7°C.

Pressure1025 mb

Wind10 mph NE

Humidity68%

Visibility—

Dew point5°C

Sat, 17+6 ° /10 °

0.2

+10 °

Glan-y-wern, Saturday, 17 October

Light rain. High 10°C, low 6°C.

Pressure1021 mb

Wind7 mph NE

Humidity71%

Visibility—

Dew point5°C

Sun, 18+8 ° /11 °

2.9

+11 °

Glan-y-wern, Sunday, 18 October

Light rain. High 11°C, low 8°C.

Pressure1016 mb

Wind7 mph E

Humidity88%

Visibility—

Dew point9°C

Mon, 19+12 ° /14 °

1.1

+14 °

Glan-y-wern, Monday, 19 October

Light rain. High 14°C, low 12°C.

Pressure1017 mb

Wind7 mph S

Humidity83%

Visibility—

Dew point11°C

Tue, 20+14 ° /15 °

+15 °

Glan-y-wern, Tuesday, 20 October

Light rain. High 15°C, low 14°C.

Pressure1018 mb

Wind13 mph E

Humidity93%

Visibility—

Dew point14°C

Wed, 21+13 ° /17 °

+17 °

Glan-y-wern, Wednesday, 21 October

Overcast. High 17°C, low 13°C.

Pressure1016 mb

Wind14 mph SE

Humidity72%

Visibility—

Dew point11°C

Thu, 22+12 ° /16 °

+16 °

Glan-y-wern, Thursday, 22 October

Overcast. High 16°C, low 12°C.

Pressure1014 mb

Wind13 mph E

Humidity79%

Visibility—

Dew point11°C

Fri, 23+9 ° /14 °

+14 °

Glan-y-wern, Friday, 23 October

Partly cloudy. High 14°C, low 9°C.

Pressure1019 mb

Wind10 mph NE

Humidity69%

Visibility—

Dew point8°C

Days 17 onward are based on 60-year climate statistics

Sat, 24+8 ° /12 °

5.6

+12 °

Glan-y-wern, Saturday, 24 October

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

Average high12°C

Average low8°C

Average rainfall5.6 mm

Chance of rain55%

Warmest on record+17° (1995)

Coldest on record+1° (2002)

Sun, 25+8 ° /12 °

+12 °

Glan-y-wern, Sunday, 25 October

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

Average high12°C

Average low8°C

Average rainfall6 mm

Chance of rain62%

Warmest on record+16° (2024)

Coldest on record-1° (2010)

Mon, 26+8 ° /12 °

4.5

+12 °

Glan-y-wern, Monday, 26 October

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

Average high12°C

Average low8°C

Average rainfall4.5 mm

Chance of rain55%

Warmest on record+16° (2005)

Coldest on record+0° (1997)

Tue, 27+8 ° /12 °

6.1

+12 °

Glan-y-wern, Tuesday, 27 October

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

Average high12°C

Average low8°C

Average rainfall6.1 mm

Chance of rain63%

Warmest on record+19° (2005)

Coldest on record+0° (1962)

Wed, 28+8 ° /12 °

6.2

+12 °

Glan-y-wern, Wednesday, 28 October

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

Average high12°C

Average low8°C

Average rainfall6.2 mm

Chance of rain62%

Warmest on record+16° (2022)

Coldest on record+2° (2008)

Thu, 29+7 ° /11 °

4.8

+11 °

Glan-y-wern, Thursday, 29 October

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

Average high11°C

Average low7°C

Average rainfall4.8 mm

Chance of rain55%

Warmest on record+17° (2022)

Coldest on record0° (1997)

Fri, 30+7 ° /12 °

5.1

+12 °

Glan-y-wern, Friday, 30 October

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

Average high12°C

Average low7°C

Average rainfall5.1 mm

Chance of rain62%

Warmest on record+16° (2009)

Coldest on record-1° (1988)

Sat, 31+8 ° /12 °

5.8

+12 °

Glan-y-wern, Saturday, 31 October

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

Average high12°C

Average low8°C

Average rainfall5.8 mm

Chance of rain63%

Warmest on record+19° (2014)

Coldest on record-1° (1988)

Sun, 01+7 ° /11 °

6.3

+11 °

Glan-y-wern, Sunday, 1 November

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

Average high11°C

Average low7°C

Average rainfall6.3 mm

Chance of rain65%

Warmest on record+17° (2015)

Coldest on record-1° (1988)

Mon, 02+7 ° /11 °

6.6

+11 °

Glan-y-wern, Monday, 2 November

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

Average high11°C

Average low7°C

Average rainfall6.6 mm

Chance of rain62%

Warmest on record+16° (2015)

Coldest on record0° (1986)

Tue, 03+7 ° /11 °

5.5

+11 °

Glan-y-wern, Tuesday, 3 November

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

Average high11°C

Average low7°C

Average rainfall5.5 mm

Chance of rain65%

Warmest on record+15° (2011)

Coldest on record-2° (2006)

Wed, 04+6 ° /10 °

3.9

+10 °

Glan-y-wern, Wednesday, 4 November

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

Average high10°C

Average low6°C

Average rainfall3.9 mm

Chance of rain53%

Warmest on record+14° (2025)

Coldest on record-1° (1968)

Thu, 05+6 ° /11 °

+11 °

Glan-y-wern, Thursday, 5 November

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

Average high11°C

Average low6°C

Average rainfall5 mm

Chance of rain52%

Warmest on record+18° (2025)

Coldest on record0° (1965)

Fri, 06+6 ° /10 °

3.8

+10 °

Glan-y-wern, Friday, 6 November

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

Average high10°C

Average low6°C

Average rainfall3.8 mm

Chance of rain53%

Warmest on record+16° (2025)

Coldest on record+1° (1964)

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 Glan-y-wern 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 Glan-y-wern 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.