As of 13:59 BST

Weather in Ystalyfera

+15°

Ystalyfera, Wednesday, 7 October, 13:59

Partly cloudy. Feels like 14°C. High 15°C, low 10°C.

Pressure1016 mb

Wind17 mph N

Humidity57%

Visibility6.2 mi

Dew point7°C

Detailed hourly forecast

The month ahead in Ystalyfera: daytime temperatures averaging +13.2° and +7.9° overnight — that is 0.2° above the climate average for October. Rain is expected on 9 days (around 69 mm), against a normal of 8 days and 66 mm. The warmest day should be 15 October (+16.8°), the coolest 21 October (+3.8°).

+13.2°/+7.9°

Average day / night

+0.2°

Above average

9 / 8

Wet days / normal

69 mm

Rainfall this month

Ten-day blocks against the climate average

Period	Forecast (day)	Average	Difference
7 October – 16 October	+14.7°	+13.3°	+1.4°
17 October – 26 October	+10.6°	+12.1°	-1.5°
27 October – 5 November	near average	+11.1°	—

October records over 66 years

+22.3°1 October 2011All-time high

-2.3°25 October 2010All-time low

Climate averages and records are calculated from the nearest reference point — Brynamman (7.7 km away).

Thu, 08+9 ° /15 °

0.5

+15 °

Ystalyfera, Thursday, 8 October

Light rain. High 15°C, low 9°C.

Pressure1025 mb

Wind12 mph NW

Humidity72%

Visibility6.2 mi

Dew point7°C

Fri, 09+9 ° /15 °

11.9

+15 °

Ystalyfera, Friday, 9 October

Rain. High 15°C, low 9°C.

Pressure1013 mb

Wind18 mph SW

Humidity99%

Visibility1.1 mi

Dew point14°C

Sat, 10+8 ° /12 °

0.3

+12 °

Ystalyfera, Saturday, 10 October

Light rain. High 12°C, low 8°C.

Pressure1014 mb

Wind17 mph W

Humidity70%

Visibility6.2 mi

Dew point7°C

Sun, 11+5 ° /11 °

+11 °

Ystalyfera, Sunday, 11 October

Overcast. High 11°C, low 5°C.

Pressure1016 mb

Wind3 mph W

Humidity74%

Visibility6.2 mi

Dew point6°C

Mon, 12+9 ° /15 °

9.3

+15 °

Ystalyfera, Monday, 12 October

Rain. High 15°C, low 9°C.

Pressure1015 mb

Wind14 mph S

Humidity97%

Visibility—

Dew point12°C

Tue, 13+14 ° /16 °

+16 °

Ystalyfera, Tuesday, 13 October

Rain. High 16°C, low 14°C.

Pressure1022 mb

Wind14 mph S

Humidity100%

Visibility—

Dew point15°C

Wed, 14+11 ° /16 °

+16 °

Ystalyfera, Wednesday, 14 October

Light rain. High 16°C, low 11°C.

Pressure1029 mb

Wind8 mph NE

Humidity78%

Visibility—

Dew point10°C

Thu, 15+10 ° /17 °

+17 °

Ystalyfera, Thursday, 15 October

Mainly clear. High 17°C, low 10°C.

Pressure1023 mb

Wind10 mph SE

Humidity59%

Visibility—

Dew point8°C

Fri, 16+8 ° /16 °

+16 °

Ystalyfera, Friday, 16 October

Overcast. High 16°C, low 8°C.

Pressure1012 mb

Wind14 mph SE

Humidity61%

Visibility—

Dew point7°C

Sat, 17+8 ° /12 °

13.5

+12 °

Ystalyfera, Saturday, 17 October

Rain. High 12°C, low 8°C.

Pressure1004 mb

Wind18 mph SW

Humidity89%

Visibility—

Dew point9°C

Sun, 18+8 ° /11 °

11.1

+11 °

Ystalyfera, Sunday, 18 October

Rain. High 11°C, low 8°C.

Pressure1002 mb

Wind19 mph S

Humidity89%

Visibility—

Dew point9°C

Mon, 19+6 ° /9 °

5.7

+9 °

Ystalyfera, Monday, 19 October

Rain. High 9°C, low 6°C.

Pressure999 mb

Wind8 mph N

Humidity75%

Visibility—

Dew point4°C

Tue, 20+4 ° /10 °

+10 °

Ystalyfera, Tuesday, 20 October

Overcast. High 10°C, low 4°C.

Pressure1001 mb

Wind16 mph NW

Humidity63%

Visibility—

Dew point3°C

Wed, 21+4 ° /11 °

0.4

+11 °

Ystalyfera, Wednesday, 21 October

Light rain. High 11°C, low 4°C.

Pressure1010 mb

Wind20 mph NW

Humidity63%

Visibility—

Dew point4°C

Thu, 22+4 ° /10 °

3.8

+10 °

Ystalyfera, Thursday, 22 October

Light rain. High 10°C, low 4°C.

Pressure1015 mb

Wind13 mph N

Humidity100%

Visibility—

Dew point10°C

Days 17 onward are based on 60-year climate statistics

Fri, 23+7 ° /12 °

3.9

+12 °

Ystalyfera, Friday, 23 October

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

Average high12°C

Average low7°C

Average rainfall3.9 mm

Chance of rain50%

Warmest on record+16° (2011)

Coldest on record+1° (1987)

Sat, 24+7 ° /12 °

+12 °

Ystalyfera, Saturday, 24 October

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

Average high12°C

Average low7°C

Average rainfall6 mm

Chance of rain62%

Warmest on record+15° (1995)

Coldest on record-1° (1987)

Sun, 25+7 ° /12 °

5.6

+12 °

Ystalyfera, Sunday, 25 October

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

Average high12°C

Average low7°C

Average rainfall5.6 mm

Chance of rain55%

Warmest on record+15° (2024)

Coldest on record-2° (2010)

Mon, 26+7 ° /12 °

3.9

+12 °

Ystalyfera, Monday, 26 October

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

Average high12°C

Average low7°C

Average rainfall3.9 mm

Chance of rain50%

Warmest on record+16° (2005)

Coldest on record+1° (2003)

Tue, 27+7 ° /12 °

5.6

+12 °

Ystalyfera, Tuesday, 27 October

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

Average high12°C

Average low7°C

Average rainfall5.6 mm

Chance of rain53%

Warmest on record+17° (2005)

Coldest on record-1° (2003)

Wed, 28+7 ° /12 °

5.3

+12 °

Ystalyfera, Wednesday, 28 October

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

Average high12°C

Average low7°C

Average rainfall5.3 mm

Chance of rain57%

Warmest on record+16° (2014)

Coldest on record+0° (2008)

Thu, 29+7 ° /11 °

5.1

+11 °

Ystalyfera, Thursday, 29 October

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

Average high11°C

Average low7°C

Average rainfall5.1 mm

Chance of rain50%

Warmest on record+17° (2022)

Coldest on record-1° (1983)

Fri, 30+7 ° /11 °

5.9

+11 °

Ystalyfera, Friday, 30 October

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

Average high11°C

Average low7°C

Average rainfall5.9 mm

Chance of rain58%

Warmest on record+16° (2015)

Coldest on record-2° (2018)

Sat, 31+7 ° /12 °

6.3

+12 °

Ystalyfera, Saturday, 31 October

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

Average high12°C

Average low7°C

Average rainfall6.3 mm

Chance of rain67%

Warmest on record+18° (2014)

Coldest on record-1° (1966)

Sun, 01+7 ° /11 °

5.6

+11 °

Ystalyfera, Sunday, 1 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 rain58%

Warmest on record+15° (2015)

Coldest on record0° (1988)

Mon, 02+6 ° /11 °

6.5

+11 °

Ystalyfera, Monday, 2 November

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

Average high11°C

Average low6°C

Average rainfall6.5 mm

Chance of rain62%

Warmest on record+15° (2005)

Coldest on record-2° (2006)

Tue, 03+6 ° /10 °

4.6

+10 °

Ystalyfera, Tuesday, 3 November

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

Average high10°C

Average low6°C

Average rainfall4.6 mm

Chance of rain57%

Warmest on record+14° (2011)

Coldest on record-2° (2006)

Wed, 04+6 ° /10 °

3.4

+10 °

Ystalyfera, Wednesday, 4 November

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

Average high10°C

Average low6°C

Average rainfall3.4 mm

Chance of rain50%

Warmest on record+14° (2025)

Coldest on record-2° (1968)

Thu, 05+6 ° /10 °

3.9

+10 °

Ystalyfera, Thursday, 5 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 rain47%

Warmest on record+16° (2025)

Coldest on record-1° (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 Ystalyfera 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 Ystalyfera 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.