As of 08:21 BST

Weather in Oldcastle

+10°

Oldcastle, Wednesday, 7 October, 08:21

Overcast. Feels like 10°C. High 13°C, low 8°C.

Pressure1014 mb

Wind11 mph N

Humidity96%

Visibility6.2 mi

Dew point10°C

Detailed hourly forecast

The month ahead in Oldcastle: daytime temperatures averaging +15.2° and +7.6° overnight — that is 3° above the climate average for October. Rain is expected on 3 days (around 8 mm), against a normal of 7 days and 55 mm. The warmest day should be 17 October (+18.8°), the coolest 22 October (+4.3°).

+15.2°/+7.6°

Average day / night

+3°

Above average

3 / 7

Wet days / normal

8 mm

Rainfall this month

Ten-day blocks against the climate average

Period	Forecast (day)	Average	Difference
7 October – 16 October	+14.8°	+12.6°	+2.2°
17 October – 26 October	+15.8°	+11.4°	+4.4°
27 October – 5 November	near average	+10.3°	—

October records over 66 years

+22.3°1 October 2011All-time high

-3.7°16 October 1993All-time low

Climate averages and records are calculated from the nearest reference point — Brynmawr (18.4 km away).

Thu, 08+8 ° /13 °

+13 °

Oldcastle, Thursday, 8 October

Overcast. High 13°C, low 8°C.

Pressure1024 mb

Wind12 mph NW

Humidity64%

Visibility6.2 mi

Dew point5°C

Fri, 09+10 ° /15 °

+15 °

Oldcastle, Friday, 9 October

Light rain. High 15°C, low 10°C.

Pressure1011 mb

Wind16 mph SW

Humidity95%

Visibility3.5 mi

Dew point14°C

Sat, 10+8 ° /12 °

+12 °

Oldcastle, Saturday, 10 October

Partly cloudy. High 12°C, low 8°C.

Pressure1013 mb

Wind16 mph W

Humidity71%

Visibility6.2 mi

Dew point6°C

Sun, 11+6 ° /13 °

+13 °

Oldcastle, Sunday, 11 October

Clear sky. High 13°C, low 6°C.

Pressure1015 mb

Wind8 mph W

Humidity63%

Visibility—

Dew point5°C

Mon, 12+6 ° /14 °

1.1

+14 °

Oldcastle, Monday, 12 October

Light rain. High 14°C, low 6°C.

Pressure1017 mb

Wind15 mph S

Humidity84%

Visibility—

Dew point10°C

Tue, 13+14 ° /18 °

0.7

+18 °

Oldcastle, Tuesday, 13 October

Light rain. High 18°C, low 14°C.

Pressure1020 mb

Wind10 mph SW

Humidity98%

Visibility—

Dew point15°C

Wed, 14+7 ° /16 °

+16 °

Oldcastle, Wednesday, 14 October

Overcast. High 16°C, low 7°C.

Pressure1030 mb

Wind6 mph NW

Humidity58%

Visibility—

Dew point5°C

Thu, 15+8 ° /17 °

+17 °

Oldcastle, Thursday, 15 October

Overcast. High 17°C, low 8°C.

Pressure1029 mb

Wind7 mph SW

Humidity57%

Visibility—

Dew point7°C

Fri, 16+8 ° /17 °

+17 °

Oldcastle, Friday, 16 October

Overcast. High 17°C, low 8°C.

Pressure1020 mb

Wind13 mph SW

Humidity60%

Visibility—

Dew point8°C

Sat, 17+9 ° /19 °

+19 °

Oldcastle, Saturday, 17 October

Clear sky. High 19°C, low 9°C.

Pressure1010 mb

Wind12 mph S

Humidity63%

Visibility—

Dew point10°C

Sun, 18+9 ° /17 °

+17 °

Oldcastle, Sunday, 18 October

Overcast. High 17°C, low 9°C.

Pressure1013 mb

Wind11 mph NE

Humidity55%

Visibility—

Dew point7°C

Mon, 19+6 ° /16 °

+16 °

Oldcastle, Monday, 19 October

Clear sky. High 16°C, low 6°C.

Pressure1022 mb

Wind6 mph NE

Humidity60%

Visibility—

Dew point6°C

Tue, 20+6 ° /15 °

+15 °

Oldcastle, Tuesday, 20 October

Mainly clear. High 15°C, low 6°C.

Pressure1031 mb

Wind6 mph NE

Humidity62%

Visibility—

Dew point5°C

Wed, 21+6 ° /14 °

+14 °

Oldcastle, Wednesday, 21 October

Overcast. High 14°C, low 6°C.

Pressure1031 mb

Wind5 mph E

Humidity59%

Visibility—

Dew point5°C

Thu, 22+4 ° /14 °

+14 °

Oldcastle, Thursday, 22 October

Overcast. High 14°C, low 4°C.

Pressure1029 mb

Wind12 mph E

Humidity67%

Visibility—

Dew point5°C

Days 17 onward are based on 60-year climate statistics

Fri, 23+6 ° /11 °

3.2

+11 °

Oldcastle, Friday, 23 October

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

Average high11°C

Average low6°C

Average rainfall3.2 mm

Chance of rain35%

Warmest on record+15° (2011)

Coldest on record-1° (1987)

Sat, 24+6 ° /11 °

4.3

+11 °

Oldcastle, Saturday, 24 October

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

Average high11°C

Average low6°C

Average rainfall4.3 mm

Chance of rain48%

Warmest on record+15° (1995)

Coldest on record-2° (1964)

Sun, 25+6 ° /11 °

3.9

+11 °

Oldcastle, Sunday, 25 October

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

Average high11°C

Average low6°C

Average rainfall3.9 mm

Chance of rain48%

Warmest on record+15° (2013)

Coldest on record-3° (2010)

Mon, 26+6 ° /11 °

3.3

+11 °

Oldcastle, Monday, 26 October

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

Average high11°C

Average low6°C

Average rainfall3.3 mm

Chance of rain47%

Warmest on record+16° (2005)

Coldest on record-1° (1997)

Tue, 27+6 ° /11 °

3.7

+11 °

Oldcastle, Tuesday, 27 October

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

Average high11°C

Average low6°C

Average rainfall3.7 mm

Chance of rain48%

Warmest on record+17° (2005)

Coldest on record-3° (2003)

Wed, 28+6 ° /11 °

4.4

+11 °

Oldcastle, Wednesday, 28 October

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

Average high11°C

Average low6°C

Average rainfall4.4 mm

Chance of rain50%

Warmest on record+16° (2014)

Coldest on record-1° (2012)

Thu, 29+5 ° /10 °

3.7

+10 °

Oldcastle, Thursday, 29 October

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

Average high10°C

Average low5°C

Average rainfall3.7 mm

Chance of rain45%

Warmest on record+16° (2022)

Coldest on record-4° (2008)

Fri, 30+5 ° /11 °

4.1

+11 °

Oldcastle, Friday, 30 October

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

Average high11°C

Average low5°C

Average rainfall4.1 mm

Chance of rain55%

Warmest on record+15° (2001)

Coldest on record-2° (1983)

Sat, 31+6 ° /11 °

5.2

+11 °

Oldcastle, Saturday, 31 October

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

Average high11°C

Average low6°C

Average rainfall5.2 mm

Chance of rain60%

Warmest on record+18° (2014)

Coldest on record-3° (1992)

Sun, 01+6 ° /11 °

3.7

+11 °

Oldcastle, Sunday, 1 November

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

Average high11°C

Average low6°C

Average rainfall3.7 mm

Chance of rain50%

Warmest on record+15° (2014)

Coldest on record-1° (2008)

Mon, 02+5 ° /10 °

+10 °

Oldcastle, Monday, 2 November

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

Average high10°C

Average low5°C

Average rainfall5 mm

Chance of rain57%

Warmest on record+15° (2005)

Coldest on record-3° (2006)

Tue, 03+5 ° /10 °

3.1

+10 °

Oldcastle, Tuesday, 3 November

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

Average high10°C

Average low5°C

Average rainfall3.1 mm

Chance of rain48%

Warmest on record+14° (1979)

Coldest on record-4° (2006)

Wed, 04+4 ° /9 °

2.7

+9 °

Oldcastle, Wednesday, 4 November

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

Average high9°C

Average low4°C

Average rainfall2.7 mm

Chance of rain38%

Warmest on record+14° (1978)

Coldest on record-3° (2006)

Thu, 05+4 ° /9 °

3.1

+9 °

Oldcastle, Thursday, 5 November

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

Average high9°C

Average low4°C

Average rainfall3.1 mm

Chance of rain40%

Warmest on record+14° (2025)

Coldest on record-2° (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 Oldcastle 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 Oldcastle 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.