As of 23:24 BST

Weather in Dyffryn

+12°

Dyffryn, Wednesday, 7 October, 23:24

Mainly clear. Feels like 11°C. High 13°C, low 11°C.

Pressure1019 mb

Wind4 mph SE

Humidity77%

Visibility6.2 mi

Dew point8°C

Detailed hourly forecast

The month ahead in Dyffryn: daytime temperatures averaging +14° and +11.2° overnight — that is 0.6° above the climate average for October. Rain is expected on 10 days (around 70 mm), against a normal of 8 days and 54 mm. The warmest day should be 12 October (+17°), the coolest 22 October (+8°).

+14°/+11.2°

Average day / night

+0.6°

Above average

10 / 8

Wet days / normal

70 mm

Rainfall this month

Ten-day blocks against the climate average

Period	Forecast (day)	Average	Difference
7 October – 16 October	+14.8°	+13.7°	+1.1°
17 October – 26 October	+12.8°	+12.8°	-0°
27 October – 5 November	near average	+12°	—

October records over 66 years

+19.5°10 October 2018All-time high

+0.8°30 October 2018All-time low

Climate averages and records are calculated from the nearest reference point — St Davids / Tyddewi (22 km away).

Thu, 08+10 ° /15 °

4.2

+15 °

Dyffryn, Thursday, 8 October

Light rain. High 15°C, low 10°C.

Pressure1025 mb

Wind11 mph NW

Humidity75%

Visibility6.2 mi

Dew point8°C

Fri, 09+13 ° /16 °

6.3

+16 °

Dyffryn, Friday, 9 October

Rain. High 16°C, low 13°C.

Pressure1012 mb

Wind23 mph NW

Humidity81%

Visibility6.2 mi

Dew point12°C

Sat, 10+13 ° /14 °

0.7

+14 °

Dyffryn, Saturday, 10 October

Light rain. High 14°C, low 13°C.

Pressure1016 mb

Wind21 mph W

Humidity74%

Visibility6.2 mi

Dew point8°C

Sun, 11+12 ° /13 °

0.7

+13 °

Dyffryn, Sunday, 11 October

Light rain. High 13°C, low 12°C.

Pressure1016 mb

Wind6 mph W

Humidity69%

Visibility6.2 mi

Dew point7°C

Mon, 12+14 ° /17 °

1.7

+17 °

Dyffryn, Monday, 12 October

Light rain. High 17°C, low 14°C.

Pressure1012 mb

Wind24 mph S

Humidity94%

Visibility—

Dew point15°C

Tue, 13+11 ° /17 °

2.3

+17 °

Dyffryn, Tuesday, 13 October

Light rain. High 17°C, low 11°C.

Pressure1020 mb

Wind23 mph SW

Humidity79%

Visibility—

Dew point11°C

Wed, 14+12 ° /15 °

+15 °

Dyffryn, Wednesday, 14 October

Overcast. High 15°C, low 12°C.

Pressure1025 mb

Wind20 mph S

Humidity80%

Visibility—

Dew point12°C

Thu, 15+11 ° /14 °

3.2

+14 °

Dyffryn, Thursday, 15 October

Rain. High 14°C, low 11°C.

Pressure1019 mb

Wind27 mph SW

Humidity66%

Visibility—

Dew point7°C

Fri, 16+9 ° /13 °

0.2

+13 °

Dyffryn, Friday, 16 October

Light rain. High 13°C, low 9°C.

Pressure1019 mb

Wind11 mph S

Humidity63%

Visibility—

Dew point6°C

Sat, 17+10 ° /11 °

19.7

+11 °

Dyffryn, Saturday, 17 October

Rain. High 11°C, low 10°C.

Pressure1013 mb

Wind20 mph NW

Humidity67%

Visibility—

Dew point6°C

Sun, 18+9 ° /13 °

0.3

+13 °

Dyffryn, Sunday, 18 October

Light rain. High 13°C, low 9°C.

Pressure1028 mb

Wind23 mph SW

Humidity56%

Visibility—

Dew point3°C

Mon, 19+13 ° /15 °

19.3

+15 °

Dyffryn, Monday, 19 October

Heavy rain. High 15°C, low 13°C.

Pressure1012 mb

Wind29 mph SW

Humidity96%

Visibility—

Dew point14°C

Tue, 20+14 ° /16 °

0.7

+16 °

Dyffryn, Tuesday, 20 October

Light rain. High 16°C, low 14°C.

Pressure1016 mb

Wind26 mph W

Humidity86%

Visibility—

Dew point12°C

Wed, 21+10 ° /12 °

1.5

+12 °

Dyffryn, Wednesday, 21 October

Light rain. High 12°C, low 10°C.

Pressure1012 mb

Wind27 mph NW

Humidity67%

Visibility—

Dew point5°C

Thu, 22+8 ° /11 °

6.6

+11 °

Dyffryn, Thursday, 22 October

Light rain. High 11°C, low 8°C.

Pressure998 mb

Wind30 mph W

Humidity64%

Visibility—

Dew point4°C

Days 17 onward are based on 60-year climate statistics

Fri, 23+10 ° /13 °

3.2

+13 °

Dyffryn, Friday, 23 October

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

Average high13°C

Average low10°C

Average rainfall3.2 mm

Chance of rain45%

Warmest on record+17° (2011)

Coldest on record+5° (1987)

Sat, 24+10 ° /13 °

5.4

+13 °

Dyffryn, Saturday, 24 October

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

Average high13°C

Average low10°C

Average rainfall5.4 mm

Chance of rain57%

Warmest on record+17° (1995)

Coldest on record+4° (2002)

Sun, 25+10 ° /13 °

+13 °

Dyffryn, Sunday, 25 October

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

Average high13°C

Average low10°C

Average rainfall4 mm

Chance of rain57%

Warmest on record+16° (2006)

Coldest on record+5° (1981)

Mon, 26+10 ° /13 °

3.5

+13 °

Dyffryn, Monday, 26 October

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

Average high13°C

Average low10°C

Average rainfall3.5 mm

Chance of rain55%

Warmest on record+16° (2005)

Coldest on record+6° (1962)

Tue, 27+10 ° /13 °

4.2

+13 °

Dyffryn, Tuesday, 27 October

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

Average high13°C

Average low10°C

Average rainfall4.2 mm

Chance of rain58%

Warmest on record+18° (2005)

Coldest on record+4° (2018)

Wed, 28+10 ° /13 °

3.9

+13 °

Dyffryn, Wednesday, 28 October

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

Average high13°C

Average low10°C

Average rainfall3.9 mm

Chance of rain62%

Warmest on record+17° (2022)

Coldest on record+4° (2008)

Thu, 29+9 ° /12 °

+12 °

Dyffryn, Thursday, 29 October

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

Average high12°C

Average low9°C

Average rainfall4 mm

Chance of rain53%

Warmest on record+16° (2022)

Coldest on record+2° (2018)

Fri, 30+10 ° /12 °

4.4

+12 °

Dyffryn, Friday, 30 October

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

Average high12°C

Average low10°C

Average rainfall4.4 mm

Chance of rain60%

Warmest on record+16° (2005)

Coldest on record+1° (2018)

Sat, 31+10 ° /13 °

+13 °

Dyffryn, Saturday, 31 October

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

Average high13°C

Average low10°C

Average rainfall5 mm

Chance of rain63%

Warmest on record+17° (2014)

Coldest on record+5° (1966)

Sun, 01+9 ° /12 °

4.3

+12 °

Dyffryn, Sunday, 1 November

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

Average high12°C

Average low9°C

Average rainfall4.3 mm

Chance of rain60%

Warmest on record+15° (2020)

Coldest on record+4° (2008)

Mon, 02+9 ° /12 °

4.4

+12 °

Dyffryn, Monday, 2 November

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

Average high12°C

Average low9°C

Average rainfall4.4 mm

Chance of rain62%

Warmest on record+16° (2005)

Coldest on record+4° (1986)

Tue, 03+9 ° /11 °

3.8

+11 °

Dyffryn, Tuesday, 3 November

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

Average high11°C

Average low9°C

Average rainfall3.8 mm

Chance of rain60%

Warmest on record+15° (1979)

Coldest on record+3° (1980)

Wed, 04+9 ° /11 °

+11 °

Dyffryn, Wednesday, 4 November

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

Average high11°C

Average low9°C

Average rainfall3 mm

Chance of rain52%

Warmest on record+15° (2010)

Coldest on record+4° (1968)

Thu, 05+9 ° /11 °

3.5

+11 °

Dyffryn, Thursday, 5 November

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

Average high11°C

Average low9°C

Average rainfall3.5 mm

Chance of rain55%

Warmest on record+16° (2025)

Coldest on record+4° (1966)

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 Dyffryn 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 Dyffryn 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.