The month ahead in Cwm Ivy: daytime temperatures averaging +14.8° and +11.6° overnight — that is 1° above the climate average for October. Rain is expected on 9 days (around 32 mm), against a normal of 8 days and 62 mm. The warmest day should be 13 October (+17.8°), the coolest 8 October (+8.2°).
+14.8°/+11.6°
Average day / night
+1°
Above average
9 / 8
Wet days / normal
32 mm
Rainfall this month
Ten-day blocks against the climate average
Period
Forecast (day)
Average
Difference
8 October – 17 October
+14.9°
+14.2°
+0.7°
18 October – 27 October
+14.6°
+13.1°
+1.5°
28 October – 6 November
near average
+12°
—
October records over 66 years
+22.3°1 October 2011All-time high
-2.2°30 October 2018All-time low
Climate averages and records are calculated from the nearest reference point — Pontarddulais (18.3 km away).
Fri, 09+13 ° /17 °4.8
+17 °
Cwm Ivy, Friday, 9 October
Rain. High 17°C, low 13°C.
Pressure1012 mb
Wind28 mph W
Humidity92%
Visibility3.3 mi
Dew point15°C
Sat, 10+12 ° /14 °0
+14 °
Cwm Ivy, Saturday, 10 October
Mainly clear. High 14°C, low 12°C.
Pressure1017 mb
Wind20 mph NW
Humidity70%
Visibility6.2 mi
Dew point8°C
Sun, 11+11 ° /15 °0.3
+15 °
Cwm Ivy, Sunday, 11 October
Light rain. High 15°C, low 11°C.
Pressure1014 mb
Wind5 mph SE
Humidity76%
Visibility6.2 mi
Dew point9°C
Mon, 12+15 ° /17 °3.1
+17 °
Cwm Ivy, Monday, 12 October
Light rain. High 17°C, low 15°C.
Pressure1012 mb
Wind13 mph S
Humidity95%
Visibility6.2 mi
Dew point16°C
Tue, 13+15 ° /18 °1.4
+18 °
Cwm Ivy, Tuesday, 13 October
Light rain. High 18°C, low 15°C.
Pressure1022 mb
Wind18 mph SW
Humidity93%
Visibility—
Dew point16°C
Wed, 14+14 ° /16 °1.6
+16 °
Cwm Ivy, Wednesday, 14 October
Light rain. High 16°C, low 14°C.
Pressure1021 mb
Wind18 mph SW
Humidity85%
Visibility—
Dew point13°C
Thu, 15+11 ° /13 °6.7
+13 °
Cwm Ivy, Thursday, 15 October
Rain. High 13°C, low 11°C.
Pressure1024 mb
Wind22 mph N
Humidity58%
Visibility—
Dew point5°C
Fri, 16+10 ° /13 °0
+13 °
Cwm Ivy, Friday, 16 October
Partly cloudy. High 13°C, low 10°C.
Pressure1024 mb
Wind13 mph NW
Humidity61%
Visibility—
Dew point5°C
Sat, 17+9 ° /12 °0
+12 °
Cwm Ivy, Saturday, 17 October
Clear sky. High 12°C, low 9°C.
Pressure1016 mb
Wind13 mph E
Humidity59%
Visibility—
Dew point3°C
Sun, 18+9 ° /13 °0.9
+13 °
Cwm Ivy, Sunday, 18 October
Light rain. High 13°C, low 9°C.
Pressure1016 mb
Wind13 mph N
Humidity64%
Visibility—
Dew point6°C
Mon, 19+11 ° /15 °3.4
+15 °
Cwm Ivy, Monday, 19 October
Light rain. High 15°C, low 11°C.
Pressure1025 mb
Wind24 mph NE
Humidity63%
Visibility—
Dew point7°C
Tue, 20+11 ° /14 °5.3
+14 °
Cwm Ivy, Tuesday, 20 October
Light rain. High 14°C, low 11°C.
Pressure1018 mb
Wind25 mph E
Humidity86%
Visibility—
Dew point10°C
Wed, 21+13 ° /15 °1.7
+15 °
Cwm Ivy, Wednesday, 21 October
Light rain. High 15°C, low 13°C.
Pressure1016 mb
Wind20 mph E
Humidity76%
Visibility—
Dew point11°C
Thu, 22+12 ° /16 °0.2
+16 °
Cwm Ivy, Thursday, 22 October
Light rain. High 16°C, low 12°C.
Pressure1023 mb
Wind12 mph N
Humidity74%
Visibility—
Dew point11°C
Fri, 23+11 ° /15 °0.3
+15 °
Cwm Ivy, Friday, 23 October
Light rain. High 15°C, low 11°C.
Pressure1031 mb
Wind15 mph N
Humidity71%
Visibility—
Dew point9°C
Days 17 onward are based on 60-year climate statistics
Sat, 24+9 ° /13 °5.7
+13 °
Cwm Ivy, Saturday, 24 October
Climate average for this date — the mean of the last 60 years.
Average high13°C
Average low9°C
Average rainfall5.7 mm
Chance of rain57%
Warmest on record+17° (1995)
Coldest on record+2° (1987)
Sun, 25+9 ° /13 °5.2
+13 °
Cwm Ivy, Sunday, 25 October
Climate average for this date — the mean of the last 60 years.
Average high13°C
Average low9°C
Average rainfall5.2 mm
Chance of rain55%
Warmest on record+16° (2006)
Coldest on record+1° (2010)
Mon, 26+9 ° /13 °3.7
+13 °
Cwm Ivy, Monday, 26 October
Climate average for this date — the mean of the last 60 years.
Average high13°C
Average low9°C
Average rainfall3.7 mm
Chance of rain53%
Warmest on record+17° (2005)
Coldest on record+4° (2003)
Tue, 27+9 ° /13 °5
+13 °
Cwm Ivy, Tuesday, 27 October
Climate average for this date — the mean of the last 60 years.
Average high13°C
Average low9°C
Average rainfall5 mm
Chance of rain53%
Warmest on record+18° (2005)
Coldest on record+2° (1962)
Wed, 28+9 ° /13 °4.6
+13 °
Cwm Ivy, Wednesday, 28 October
Climate average for this date — the mean of the last 60 years.
Average high13°C
Average low9°C
Average rainfall4.6 mm
Chance of rain62%
Warmest on record+17° (2014)
Coldest on record+2° (2018)
Thu, 29+8 ° /12 °4.9
+12 °
Cwm Ivy, Thursday, 29 October
Climate average for this date — the mean of the last 60 years.
Average high12°C
Average low8°C
Average rainfall4.9 mm
Chance of rain52%
Warmest on record+17° (2022)
Coldest on record-1° (2018)
Fri, 30+9 ° /13 °5.4
+13 °
Cwm Ivy, Friday, 30 October
Climate average for this date — the mean of the last 60 years.
Average high13°C
Average low9°C
Average rainfall5.4 mm
Chance of rain58%
Warmest on record+17° (2015)
Coldest on record-2° (2018)
Sat, 31+9 ° /13 °5.6
+13 °
Cwm Ivy, Saturday, 31 October
Climate average for this date — the mean of the last 60 years.
Average high13°C
Average low9°C
Average rainfall5.6 mm
Chance of rain65%
Warmest on record+19° (2014)
Coldest on record+1° (2018)
Sun, 01+9 ° /12 °4.9
+12 °
Cwm Ivy, Sunday, 1 November
Climate average for this date — the mean of the last 60 years.
Average high12°C
Average low9°C
Average rainfall4.9 mm
Chance of rain57%
Warmest on record+16° (2009)
Coldest on record+2° (2008)
Mon, 02+8 ° /12 °5.6
+12 °
Cwm Ivy, Monday, 2 November
Climate average for this date — the mean of the last 60 years.
Average high12°C
Average low8°C
Average rainfall5.6 mm
Chance of rain62%
Warmest on record+16° (2005)
Coldest on record0° (2018)
Tue, 03+8 ° /12 °4.3
+12 °
Cwm Ivy, Tuesday, 3 November
Climate average for this date — the mean of the last 60 years.
Average high12°C
Average low8°C
Average rainfall4.3 mm
Chance of rain57%
Warmest on record+15° (2011)
Coldest on record+1° (1985)
Wed, 04+8 ° /11 °3.1
+11 °
Cwm Ivy, Wednesday, 4 November
Climate average for this date — the mean of the last 60 years.
Average high11°C
Average low8°C
Average rainfall3.1 mm
Chance of rain50%
Warmest on record+15° (1973)
Coldest on record+1° (2006)
Thu, 05+8 ° /11 °3.5
+11 °
Cwm Ivy, Thursday, 5 November
Climate average for this date — the mean of the last 60 years.
Average high11°C
Average low8°C
Average rainfall3.5 mm
Chance of rain47%
Warmest on record+16° (2025)
Coldest on record+2° (1965)
Fri, 06+8 ° /11 °3.1
+11 °
Cwm Ivy, Friday, 6 November
Climate average for this date — the mean of the last 60 years.
Average high11°C
Average low8°C
Average rainfall3.1 mm
Chance of rain48%
Warmest on record+15° (2015)
Coldest on record+2° (2017)
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 Cwm Ivy 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 Cwm Ivy 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.