As of 22:50 BST

Weather in Pencaenewydd

+9°

Pencaenewydd, Wednesday, 7 October, 22:50

Partly cloudy. Feels like 6°C. High 13°C, low 9°C.

Pressure1020 mb

Wind19 mph NW

Humidity79%

Visibility6.2 mi

Dew point6°C

Detailed hourly forecast

The month ahead in Pencaenewydd: daytime temperatures averaging +13.2° and +10.5° overnight — that is 0.2° below the climate average for October. Rain is expected on 13 days (around 96 mm), against a normal of 10 days and 75 mm. The warmest day should be 12 October (+16.4°), the coolest 22 October (+8.3°).

+13.2°/+10.5°

Average day / night

−0.2°

Below average

13 / 10

Wet days / normal

96 mm

Rainfall this month

Ten-day blocks against the climate average

Period	Forecast (day)	Average	Difference
7 October – 16 October	+13.9°	+13.7°	+0.2°
17 October – 26 October	+12°	+12.8°	-0.7°
27 October – 5 November	near average	+11.9°	—

October records over 66 years

+20.3°10 October 2018All-time high

+1.7°30 October 2018All-time low

Climate averages and records are calculated from the nearest reference point — Pwllheli (6.6 km away).

Thu, 08+9 ° /13 °

8.3

+13 °

Pencaenewydd, Thursday, 8 October

Rain. High 13°C, low 9°C.

Pressure1024 mb

Wind10 mph NW

Humidity69%

Visibility6.2 mi

Dew point7°C

Fri, 09+11 ° /15 °

14.5

+15 °

Pencaenewydd, Friday, 9 October

Rain. High 15°C, low 11°C.

Pressure1010 mb

Wind18 mph NW

Humidity79%

Visibility6.2 mi

Dew point10°C

Sat, 10+11 ° /12 °

3.1

+12 °

Pencaenewydd, Saturday, 10 October

Light rain. High 12°C, low 11°C.

Pressure1014 mb

Wind20 mph W

Humidity74%

Visibility6.2 mi

Dew point7°C

Sun, 11+10 ° /12 °

0.2

+12 °

Pencaenewydd, Sunday, 11 October

Light rain. High 12°C, low 10°C.

Pressure1015 mb

Wind7 mph W

Humidity68%

Visibility6.2 mi

Dew point6°C

Mon, 12+11 ° /16 °

+16 °

Pencaenewydd, Monday, 12 October

Light rain. High 16°C, low 11°C.

Pressure1012 mb

Wind22 mph S

Humidity90%

Visibility—

Dew point13°C

Tue, 13+12 ° /16 °

4.1

+16 °

Pencaenewydd, Tuesday, 13 October

Light rain. High 16°C, low 12°C.

Pressure1020 mb

Wind21 mph S

Humidity78%

Visibility—

Dew point11°C

Wed, 14+13 ° /15 °

0.1

+15 °

Pencaenewydd, Wednesday, 14 October

Light rain. High 15°C, low 13°C.

Pressure1024 mb

Wind21 mph S

Humidity87%

Visibility—

Dew point13°C

Thu, 15+11 ° /14 °

4.2

+14 °

Pencaenewydd, Thursday, 15 October

Rain. High 14°C, low 11°C.

Pressure1018 mb

Wind30 mph S

Humidity64%

Visibility—

Dew point6°C

Fri, 16+9 ° /12 °

+12 °

Pencaenewydd, Friday, 16 October

Partly cloudy. High 12°C, low 9°C.

Pressure1019 mb

Wind12 mph S

Humidity70%

Visibility—

Dew point6°C

Sat, 17+9 ° /11 °

14.8

+11 °

Pencaenewydd, Saturday, 17 October

Rain. High 11°C, low 9°C.

Pressure1012 mb

Wind22 mph W

Humidity66%

Visibility—

Dew point5°C

Sun, 18+9 ° /12 °

2.8

+12 °

Pencaenewydd, Sunday, 18 October

Light rain. High 12°C, low 9°C.

Pressure1027 mb

Wind23 mph SW

Humidity60%

Visibility—

Dew point3°C

Mon, 19+12 ° /14 °

19.1

+14 °

Pencaenewydd, Monday, 19 October

Rain. High 14°C, low 12°C.

Pressure1009 mb

Wind27 mph SW

Humidity96%

Visibility—

Dew point14°C

Tue, 20+12 ° /15 °

2.3

+15 °

Pencaenewydd, Tuesday, 20 October

Light rain. High 15°C, low 12°C.

Pressure1013 mb

Wind28 mph NW

Humidity85%

Visibility—

Dew point12°C

Wed, 21+9 ° /11 °

3.4

+11 °

Pencaenewydd, Wednesday, 21 October

Light rain. High 11°C, low 9°C.

Pressure1009 mb

Wind32 mph NW

Humidity67%

Visibility—

Dew point4°C

Thu, 22+8 ° /9 °

12.2

+9 °

Pencaenewydd, Thursday, 22 October

Light rain. High 9°C, low 8°C.

Pressure995 mb

Wind30 mph NW

Humidity73%

Visibility—

Dew point5°C

Days 17 onward are based on 60-year climate statistics

Fri, 23+10 ° /13 °

4.5

+13 °

Pencaenewydd, Friday, 23 October

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

Average high13°C

Average low10°C

Average rainfall4.5 mm

Chance of rain65%

Warmest on record+17° (2011)

Coldest on record+5° (1964)

Sat, 24+10 ° /13 °

5.7

+13 °

Pencaenewydd, Saturday, 24 October

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

Average high13°C

Average low10°C

Average rainfall5.7 mm

Chance of rain65%

Warmest on record+17° (1995)

Coldest on record+5° (1987)

Sun, 25+10 ° /13 °

6.6

+13 °

Pencaenewydd, Sunday, 25 October

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

Average high13°C

Average low10°C

Average rainfall6.6 mm

Chance of rain67%

Warmest on record+16° (2006)

Coldest on record+5° (2010)

Mon, 26+10 ° /13 °

4.8

+13 °

Pencaenewydd, Monday, 26 October

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

Average high13°C

Average low10°C

Average rainfall4.8 mm

Chance of rain67%

Warmest on record+16° (2005)

Coldest on record+5° (2012)

Tue, 27+10 ° /13 °

6.7

+13 °

Pencaenewydd, Tuesday, 27 October

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

Average high13°C

Average low10°C

Average rainfall6.7 mm

Chance of rain62%

Warmest on record+18° (2005)

Coldest on record+5° (2012)

Wed, 28+10 ° /12 °

6.4

+12 °

Pencaenewydd, Wednesday, 28 October

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

Average high12°C

Average low10°C

Average rainfall6.4 mm

Chance of rain65%

Warmest on record+17° (2005)

Coldest on record+4° (2008)

Thu, 29+9 ° /12 °

4.6

+12 °

Pencaenewydd, Thursday, 29 October

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

Average high12°C

Average low9°C

Average rainfall4.6 mm

Chance of rain62%

Warmest on record+17° (2022)

Coldest on record+3° (2018)

Fri, 30+9 ° /12 °

5.5

+12 °

Pencaenewydd, Friday, 30 October

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

Average high12°C

Average low9°C

Average rainfall5.5 mm

Chance of rain68%

Warmest on record+16° (2005)

Coldest on record+2° (2018)

Sat, 31+10 ° /12 °

6.4

+12 °

Pencaenewydd, Saturday, 31 October

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

Average high12°C

Average low10°C

Average rainfall6.4 mm

Chance of rain67%

Warmest on record+18° (2014)

Coldest on record+4° (1988)

Sun, 01+9 ° /12 °

+12 °

Pencaenewydd, Sunday, 1 November

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

Average high12°C

Average low9°C

Average rainfall7 mm

Chance of rain68%

Warmest on record+15° (2020)

Coldest on record+4° (1988)

Mon, 02+9 ° /12 °

6.8

+12 °

Pencaenewydd, Monday, 2 November

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

Average high12°C

Average low9°C

Average rainfall6.8 mm

Chance of rain67%

Warmest on record+15° (2005)

Coldest on record+4° (1986)

Tue, 03+9 ° /11 °

6.8

+11 °

Pencaenewydd, Tuesday, 3 November

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

Average high11°C

Average low9°C

Average rainfall6.8 mm

Chance of rain72%

Warmest on record+15° (2011)

Coldest on record+2° (1980)

Wed, 04+9 ° /11 °

4.8

+11 °

Pencaenewydd, Wednesday, 4 November

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

Average high11°C

Average low9°C

Average rainfall4.8 mm

Chance of rain65%

Warmest on record+14° (2010)

Coldest on record+4° (1988)

Thu, 05+9 ° /11 °

5.4

+11 °

Pencaenewydd, Thursday, 5 November

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

Average high11°C

Average low9°C

Average rainfall5.4 mm

Chance of rain58%

Warmest on record+15° (2025)

Coldest on record+5° (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 Pencaenewydd 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 Pencaenewydd 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.