As of 19:16 BST

Weather in Trecwn

+10°

Trecwn, Wednesday, 7 October, 19:16

Mainly clear. Feels like 6°C. High 13°C, low 10°C.

Pressure1017 mb

Wind18 mph NW

Humidity92%

Visibility6.2 mi

Dew point8°C

Detailed hourly forecast

The month ahead in Trecwn: daytime temperatures averaging +13.9° and +9.6° overnight — that is 0.4° above the climate average for October. Rain is expected on 12 days (around 70 mm), against a normal of 8 days and 54 mm. The warmest day should be 12 October (+17°), the coolest 18 October (+6°).

+13.9°/+9.6°

Average day / night

+0.4°

Above average

12 / 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	+14.5°	+13.7°	+0.7°
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 (22.4 km away).

Thu, 08+10 ° /15 °

2.1

+15 °

Trecwn, Thursday, 8 October

Light rain. High 15°C, low 10°C.

Pressure1026 mb

Wind10 mph NW

Humidity75%

Visibility6.2 mi

Dew point8°C

Fri, 09+12 ° /16 °

5.6

+16 °

Trecwn, Friday, 9 October

Rain. High 16°C, low 12°C.

Pressure1012 mb

Wind21 mph NW

Humidity90%

Visibility6.2 mi

Dew point13°C

Sat, 10+11 ° /13 °

0.5

+13 °

Trecwn, Saturday, 10 October

Light rain. High 13°C, low 11°C.

Pressure1014 mb

Wind21 mph NW

Humidity68%

Visibility6.2 mi

Dew point7°C

Sun, 11+10 ° /13 °

0.1

+13 °

Trecwn, Sunday, 11 October

Light rain. High 13°C, low 10°C.

Pressure1015 mb

Wind5 mph W

Humidity69%

Visibility6.2 mi

Dew point7°C

Mon, 12+13 ° /17 °

5.3

+17 °

Trecwn, Monday, 12 October

Light rain. High 17°C, low 13°C.

Pressure1009 mb

Wind20 mph SE

Humidity98%

Visibility—

Dew point16°C

Tue, 13+11 ° /16 °

6.4

+16 °

Trecwn, Tuesday, 13 October

Rain. High 16°C, low 11°C.

Pressure1022 mb

Wind21 mph SW

Humidity73%

Visibility—

Dew point10°C

Wed, 14+11 ° /15 °

+15 °

Trecwn, Wednesday, 14 October

Clear sky. High 15°C, low 11°C.

Pressure1030 mb

Wind15 mph SW

Humidity73%

Visibility—

Dew point10°C

Thu, 15+10 ° /14 °

+14 °

Trecwn, Thursday, 15 October

Light rain. High 14°C, low 10°C.

Pressure1020 mb

Wind22 mph S

Humidity87%

Visibility—

Dew point9°C

Fri, 16+8 ° /12 °

+12 °

Trecwn, Friday, 16 October

Overcast. High 12°C, low 8°C.

Pressure1025 mb

Wind9 mph NW

Humidity60%

Visibility—

Dew point4°C

Sat, 17+8 ° /14 °

1.4

+14 °

Trecwn, Saturday, 17 October

Light rain. High 14°C, low 8°C.

Pressure1011 mb

Wind16 mph W

Humidity82%

Visibility—

Dew point11°C

Sun, 18+6 ° /15 °

1.8

+15 °

Trecwn, Sunday, 18 October

Light rain. High 15°C, low 6°C.

Pressure1011 mb

Wind33 mph S

Humidity66%

Visibility—

Dew point5°C

Mon, 19+9 ° /13 °

15.5

+13 °

Trecwn, Monday, 19 October

Light rain. High 13°C, low 9°C.

Pressure997 mb

Wind28 mph S

Humidity72%

Visibility—

Dew point5°C

Tue, 20+9 ° /11 °

10.5

+11 °

Trecwn, Tuesday, 20 October

Light rain. High 11°C, low 9°C.

Pressure996 mb

Wind27 mph W

Humidity61%

Visibility—

Dew point4°C

Wed, 21+7 ° /10 °

6.5

+10 °

Trecwn, Wednesday, 21 October

Light rain. High 10°C, low 7°C.

Pressure1007 mb

Wind15 mph W

Humidity72%

Visibility—

Dew point5°C

Thu, 22+8 ° /14 °

10.1

+14 °

Trecwn, Thursday, 22 October

Rain. High 14°C, low 8°C.

Pressure1004 mb

Wind23 mph S

Humidity86%

Visibility—

Dew point9°C

Days 17 onward are based on 60-year climate statistics

Fri, 23+10 ° /13 °

3.2

+13 °

Trecwn, 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 °

Trecwn, 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 °

Trecwn, 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 °

Trecwn, 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 °

Trecwn, 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 °

Trecwn, 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 °

Trecwn, 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 °

Trecwn, 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 °

Trecwn, 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 °

Trecwn, 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 °

Trecwn, 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 °

Trecwn, 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 °

Trecwn, 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 °

Trecwn, 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 Trecwn 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 Trecwn 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.