The month ahead in Morfa Bychan: daytime temperatures averaging +13.6° and +9.8° overnight — that is 0.3° above the climate average for October. Rain is expected on 14 days (around 112 mm), against a normal of 10 days and 81 mm. The warmest day should be 12 October (+16.1°), the coolest 18 October (+6.5°).
+13.6°/+9.8°
Average day / night
+0.3°
Above average
14 / 10
Wet days / normal
112 mm
Rainfall this month
Ten-day blocks against the climate average
Period
Forecast (day)
Average
Difference
7 October – 16 October
+14.2°
+13.7°
+0.5°
17 October – 26 October
+12.5°
+12.5°
+0°
27 October – 5 November
near average
+11.5°
—
October records over 66 years
+23°1 October 2011All-time high
-1.2°25 October 2010All-time low
Climate averages and records are calculated from the nearest reference point — Porthmadog (2.5 km away).
Thu, 08+9 ° /16 °6.7
+16 °
Morfa Bychan, Thursday, 8 October
Rain. High 16°C, low 9°C.
Pressure1024 mb
Wind10 mph NW
Humidity65%
Visibility6.2 mi
Dew point6°C
Fri, 09+12 ° /15 °13.3
+15 °
Morfa Bychan, Friday, 9 October
Rain. High 15°C, low 12°C.
Pressure1010 mb
Wind16 mph NW
Humidity78%
Visibility6.2 mi
Dew point10°C
Sat, 10+11 ° /13 °4.5
+13 °
Morfa Bychan, Saturday, 10 October
Light rain. High 13°C, low 11°C.
Pressure1012 mb
Wind19 mph W
Humidity77%
Visibility6.2 mi
Dew point8°C
Sun, 11+10 ° /12 °0.4
+12 °
Morfa Bychan, Sunday, 11 October
Light rain. High 12°C, low 10°C.
Pressure1014 mb
Wind7 mph W
Humidity75%
Visibility6.2 mi
Dew point8°C
Mon, 12+11 ° /16 °5.6
+16 °
Morfa Bychan, Monday, 12 October
Light rain. High 16°C, low 11°C.
Pressure1008 mb
Wind17 mph S
Humidity92%
Visibility—
Dew point14°C
Tue, 13+12 ° /16 °8.8
+16 °
Morfa Bychan, Tuesday, 13 October
Rain. High 16°C, low 12°C.
Pressure1021 mb
Wind20 mph S
Humidity76%
Visibility—
Dew point10°C
Wed, 14+12 ° /15 °1.1
+15 °
Morfa Bychan, Wednesday, 14 October
Light rain. High 15°C, low 12°C.
Pressure1029 mb
Wind15 mph S
Humidity88%
Visibility—
Dew point12°C
Thu, 15+10 ° /14 °5.3
+14 °
Morfa Bychan, Thursday, 15 October
Rain. High 14°C, low 10°C.
Pressure1018 mb
Wind23 mph S
Humidity92%
Visibility—
Dew point10°C
Fri, 16+9 ° /12 °0
+12 °
Morfa Bychan, Friday, 16 October
Overcast. High 12°C, low 9°C.
Pressure1025 mb
Wind9 mph S
Humidity66%
Visibility—
Dew point6°C
Sat, 17+7 ° /12 °4.4
+12 °
Morfa Bychan, Saturday, 17 October
Light rain. High 12°C, low 7°C.
Pressure1011 mb
Wind15 mph S
Humidity91%
Visibility—
Dew point10°C
Sun, 18+7 ° /14 °1.4
+14 °
Morfa Bychan, Sunday, 18 October
Light rain. High 14°C, low 7°C.
Pressure1012 mb
Wind30 mph S
Humidity67%
Visibility—
Dew point4°C
Mon, 19+10 ° /14 °26.2
+14 °
Morfa Bychan, Monday, 19 October
Rain. High 14°C, low 10°C.
Pressure995 mb
Wind28 mph SW
Humidity74%
Visibility—
Dew point7°C
Tue, 20+10 ° /11 °16.3
+11 °
Morfa Bychan, Tuesday, 20 October
Light rain. High 11°C, low 10°C.
Pressure995 mb
Wind27 mph SW
Humidity68%
Visibility—
Dew point5°C
Wed, 21+8 ° /11 °6.4
+11 °
Morfa Bychan, Wednesday, 21 October
Light rain. High 11°C, low 8°C.
Pressure1006 mb
Wind17 mph W
Humidity71%
Visibility—
Dew point5°C
Thu, 22+8 ° /13 °9.6
+13 °
Morfa Bychan, Thursday, 22 October
Rain. High 13°C, low 8°C.
Pressure1005 mb
Wind18 mph S
Humidity82%
Visibility—
Dew point8°C
Days 17 onward are based on 60-year climate statistics
Fri, 23+8 ° /12 °4.7
+12 °
Morfa Bychan, Friday, 23 October
Climate average for this date — the mean of the last 60 years.
Average high12°C
Average low8°C
Average rainfall4.7 mm
Chance of rain63%
Warmest on record+18° (1996)
Coldest on record+1° (1993)
Sat, 24+8 ° /12 °6.7
+12 °
Morfa Bychan, Saturday, 24 October
Climate average for this date — the mean of the last 60 years.
Average high12°C
Average low8°C
Average rainfall6.7 mm
Chance of rain65%
Warmest on record+17° (1995)
Coldest on record+2° (2002)
Sun, 25+8 ° /12 °7.3
+12 °
Morfa Bychan, Sunday, 25 October
Climate average for this date — the mean of the last 60 years.
Average high12°C
Average low8°C
Average rainfall7.3 mm
Chance of rain67%
Warmest on record+17° (2024)
Coldest on record-1° (2010)
Mon, 26+8 ° /12 °5.2
+12 °
Morfa Bychan, Monday, 26 October
Climate average for this date — the mean of the last 60 years.
Average high12°C
Average low8°C
Average rainfall5.2 mm
Chance of rain67%
Warmest on record+17° (2005)
Coldest on record+1° (1997)
Tue, 27+8 ° /12 °6.7
+12 °
Morfa Bychan, Tuesday, 27 October
Climate average for this date — the mean of the last 60 years.
Average high12°C
Average low8°C
Average rainfall6.7 mm
Chance of rain62%
Warmest on record+19° (2005)
Coldest on record+0° (1962)
Wed, 28+8 ° /12 °7.1
+12 °
Morfa Bychan, Wednesday, 28 October
Climate average for this date — the mean of the last 60 years.
Average high12°C
Average low8°C
Average rainfall7.1 mm
Chance of rain67%
Warmest on record+17° (2022)
Coldest on record+2° (2008)
Thu, 29+7 ° /12 °5.1
+12 °
Morfa Bychan, Thursday, 29 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 rain63%
Warmest on record+18° (2022)
Coldest on record0° (1997)
Fri, 30+8 ° /12 °5.7
+12 °
Morfa Bychan, Friday, 30 October
Climate average for this date — the mean of the last 60 years.
Average high12°C
Average low8°C
Average rainfall5.7 mm
Chance of rain68%
Warmest on record+16° (2009)
Coldest on record-1° (1988)
Sat, 31+8 ° /12 °6.5
+12 °
Morfa Bychan, Saturday, 31 October
Climate average for this date — the mean of the last 60 years.
Average high12°C
Average low8°C
Average rainfall6.5 mm
Chance of rain65%
Warmest on record+19° (2014)
Coldest on record-1° (1988)
Sun, 01+8 ° /11 °8
+11 °
Morfa Bychan, Sunday, 1 November
Climate average for this date — the mean of the last 60 years.
Average high11°C
Average low8°C
Average rainfall8 mm
Chance of rain68%
Warmest on record+17° (2015)
Coldest on record-1° (1988)
Mon, 02+7 ° /11 °7.6
+11 °
Morfa Bychan, Monday, 2 November
Climate average for this date — the mean of the last 60 years.
Average high11°C
Average low7°C
Average rainfall7.6 mm
Chance of rain68%
Warmest on record+16° (2015)
Coldest on record+0° (1986)
Tue, 03+7 ° /11 °6.7
+11 °
Morfa Bychan, Tuesday, 3 November
Climate average for this date — the mean of the last 60 years.
Average high11°C
Average low7°C
Average rainfall6.7 mm
Chance of rain72%
Warmest on record+15° (2011)
Coldest on record-2° (2006)
Wed, 04+7 ° /11 °4.7
+11 °
Morfa Bychan, Wednesday, 4 November
Climate average for this date — the mean of the last 60 years.
Average high11°C
Average low7°C
Average rainfall4.7 mm
Chance of rain65%
Warmest on record+14° (2015)
Coldest on record-1° (1968)
Thu, 05+7 ° /11 °5.6
+11 °
Morfa Bychan, Thursday, 5 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+18° (2025)
Coldest on record0° (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 Morfa Bychan 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 Morfa Bychan 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.