Carmarthenshire weather

The Carmarthenshire weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for Carmarthenshire, Wales.

• Carmarthenshire weather averages
• Carmarthenshire weather by month
• Destinations in Carmarthenshire
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Carmarthenshire weather averages

Check the Carmarthenshire weather averages for each month of the year including maximum daytime and minimum night-time temperatures, monthly rainfall, number of days with rain and average daily hours of sunshine for Carmarthenshire, Wales. The Carmarthenshire weather averages shown below are for Llanelli.

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Carmarthenshire weather by month

Check the weather for Carmarthenshire, Wales for a particular month by selecting from the list below. The Carmarthenshire monthly weather averages are for Llanelli. This gives the best indication of what to expect from the weather months in advance.

• January
• February
• March
• April
• May
• June
• July
• August
• September
• October
• November
• December

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Carmarthenshire weather in January

The average maximum daytime temperature in Carmarthenshire (Llanelli) in January is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 2 hours of sunshine a day in Carmarthenshire (Llanelli) during January.

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 20
  20 days with some rainfall
• 2
  2°C min night temperature
• 161
  161 mm of monthly rainfall

On average 161 mm (6.3 inches) of rain normally falls in Carmarthenshire (Llanelli) during January with rain falling on 20 days of the month.

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Carmarthenshire weather in February

The average maximum daytime temperature in Carmarthenshire (Llanelli) in February is a cool 8°C (46°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 3 hours of sunshine a day in Carmarthenshire (Llanelli) during February.

• 8
  8°C max day temperature
• 3
  3 hours of sunshine per day
• 16
  16 days with some rainfall
• 2
  2°C min night temperature
• 112
  112 mm of monthly rainfall

On average 112 mm (4.4 inches) of rain normally falls in Carmarthenshire (Llanelli) during February with rain falling on 16 days of the month.

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Carmarthenshire weather in March

The average maximum daytime temperature in Carmarthenshire (Llanelli) in March is a cool 9°C (48°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 4 hours of sunshine a day in Carmarthenshire (Llanelli) during March.

• 9
  9°C max day temperature
• 4
  4 hours of sunshine per day
• 17
  17 days with some rainfall
• 3
  3°C min night temperature
• 114
  114 mm of monthly rainfall

On average 114 mm (4.5 inches) of rain normally falls in Carmarthenshire (Llanelli) during March with rain falling on 17 days of the month.

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Carmarthenshire weather in April

The average maximum daytime temperature in Carmarthenshire (Llanelli) in April is a cool 12°C (54°F), while the average minimum night-time temperature is a cold 4°C (39°F). You can expect on average 5 hours of sunshine a day in Carmarthenshire (Llanelli) during April.

• 12
  12°C max day temperature
• 5
  5 hours of sunshine per day
• 14
  14 days with some rainfall
• 4
  4°C min night temperature
• 84
  84 mm of monthly rainfall

On average 84 mm (3.3 inches) of rain normally falls in Carmarthenshire (Llanelli) during April with rain falling on 14 days of the month.

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Carmarthenshire weather in May

The average maximum daytime temperature in Carmarthenshire (Llanelli) in May is a comfortable 15°C (59°F), while the average minimum night-time temperature is a cold 7°C (45°F). You can expect on average 6 hours of sunshine a day in Carmarthenshire (Llanelli) during May.

• 15
  15°C max day temperature
• 6
  6 hours of sunshine per day
• 13
  13 days with some rainfall
• 7
  7°C min night temperature
• 79
  79 mm of monthly rainfall

On average 79 mm (3.1 inches) of rain normally falls in Carmarthenshire (Llanelli) during May with rain falling on 13 days of the month.

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Carmarthenshire weather in June

The average maximum daytime temperature in Carmarthenshire (Llanelli) in June is a comfortable 17°C (63°F), while the average minimum night-time temperature is a cool 10°C (50°F). You can expect on average 6 hours of sunshine a day in Carmarthenshire (Llanelli) during June.

• 17
  17°C max day temperature
• 6
  6 hours of sunshine per day
• 14
  14 days with some rainfall
• 10
  10°C min night temperature
• 97
  97 mm of monthly rainfall

On average 97 mm (3.8 inches) of rain normally falls in Carmarthenshire (Llanelli) during June with rain falling on 14 days of the month.

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Carmarthenshire weather in July

The average maximum daytime temperature in Carmarthenshire (Llanelli) in July is a comfortable 20°C (68°F), while the average minimum night-time temperature is a cool 12°C (54°F). You can expect on average 6 hours of sunshine a day in Carmarthenshire (Llanelli) during July.

• 20
  20°C max day temperature
• 6
  6 hours of sunshine per day
• 13
  13 days with some rainfall
• 12
  12°C min night temperature
• 86
  86 mm of monthly rainfall

On average 86 mm (3.4 inches) of rain normally falls in Carmarthenshire (Llanelli) during July with rain falling on 13 days of the month.

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Carmarthenshire weather in August

The average maximum daytime temperature in Carmarthenshire (Llanelli) in August is a comfortable 19°C (66°F), while the average minimum night-time temperature is a cool 12°C (54°F). You can expect on average 6 hours of sunshine a day in Carmarthenshire (Llanelli) during August.

• 19
  19°C max day temperature
• 6
  6 hours of sunshine per day
• 15
  15 days with some rainfall
• 12
  12°C min night temperature
• 124
  124 mm of monthly rainfall

On average 124 mm (4.9 inches) of rain normally falls in Carmarthenshire (Llanelli) during August with rain falling on 15 days of the month.

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Carmarthenshire weather in September

The average maximum daytime temperature in Carmarthenshire (Llanelli) in September is a comfortable 17°C (63°F), while the average minimum night-time temperature is a cool 10°C (50°F). You can expect on average 4 hours of sunshine a day in Carmarthenshire (Llanelli) during September.

• 17
  17°C max day temperature
• 4
  4 hours of sunshine per day
• 16
  16 days with some rainfall
• 10
  10°C min night temperature
• 131
  131 mm of monthly rainfall

On average 131 mm (5.2 inches) of rain normally falls in Carmarthenshire (Llanelli) during September with rain falling on 16 days of the month.

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Carmarthenshire weather in October

The average maximum daytime temperature in Carmarthenshire (Llanelli) in October is a comfortable 14°C (57°F), while the average minimum night-time temperature is a cool 8°C (46°F). You can expect on average 3 hours of sunshine a day in Carmarthenshire (Llanelli) during October.

• 14
  14°C max day temperature
• 3
  3 hours of sunshine per day
• 19
  19 days with some rainfall
• 8
  8°C min night temperature
• 157
  157 mm of monthly rainfall

On average 157 mm (6.2 inches) of rain normally falls in Carmarthenshire (Llanelli) during October with rain falling on 19 days of the month.

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Carmarthenshire weather in November

The average maximum daytime temperature in Carmarthenshire (Llanelli) in November is a cool 10°C (50°F), while the average minimum night-time temperature is a cold 4°C (39°F). You can expect on average 2 hours of sunshine a day in Carmarthenshire (Llanelli) during November.

• 10
  10°C max day temperature
• 2
  2 hours of sunshine per day
• 20
  20 days with some rainfall
• 4
  4°C min night temperature
• 167
  167 mm of monthly rainfall

On average 167 mm (6.6 inches) of rain normally falls in Carmarthenshire (Llanelli) during November with rain falling on 20 days of the month.

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Carmarthenshire weather in December

The average maximum daytime temperature in Carmarthenshire (Llanelli) in December is a cool 8°C (46°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 2 hours of sunshine a day in Carmarthenshire (Llanelli) during December.

• 8
  8°C max day temperature
• 2
  2 hours of sunshine per day
• 20
  20 days with some rainfall
• 3
  3°C min night temperature
• 169
  169 mm of monthly rainfall

On average 169 mm (6.7 inches) of rain normally falls in Carmarthenshire (Llanelli) during December with rain falling on 20 days of the month.

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Carmarthenshire destinations

Browse the destinations below to find a holiday weather guide to help you plan your next holiday to Carmarthenshire. If you can't find the destination you are looking for, try the destination search.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Top destinations in Carmarthenshire

• Ammanford
• Brechfa
• Burry Port
• Carmarthen
• Clynderwen
• Cross Hands
• Crugybar
• Cynghordy
• Glanamman
• Kidwelly
• Laugharne
• Llanarthney
• Llanddarog
• Llandeilo
• Llandovery
• Llandybie
• Llanelli
• Llangeler
• Llangendeirne
• Llangunnor
• Llannon
• Llansawel
• Llansteffan
• Llanwrda
• Llanybydder
• Nantycaws
• Newcastle Emlyn
• Pembrey
• Pumpsaint
• Whitland

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Places starting with A

• Allt-Walis
• Ammanford

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Places starting with B

• Bettws
• Brechfa
• Burry Port
• Bynea

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Places starting with C

• Capel Hendre
• Carmarthen
• Clynderwen
• Cross Hands
• Crugybar
• Cwmffrwd
• Cwmgwili
• Cynghordy
• Cynwyl Elfed

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Places starting with D

• Dafen
• Derwydd
• Drefach
• Dryslwyn

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Places starting with E

• Efailwen

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Places starting with F

• Ferryside

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Places starting with G

• Gelliwen
• Glanamman
• Gorslas
• Gwyddgrug

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Places starting with H

• Halfway
• Harford

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Places starting with I

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Places starting with J

• Johnstown

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Places starting with K

• Kidwelly

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Places starting with L

• Laugharne
• Llanarthney
• Llanddarog
• Llanddausaint
• Llandeilo
• Llandovery
• Llandybie
• Llanegwad
• Llanelli
• Llanfihangel-Rhos-y-corn
• Llangeler
• Llangendeirne
• Llangennech
• Llangunnor
• Llanllwni
• Llannon
• Llansawel
• Llansteffan
• Llanwrda
• Llanybydder
• Llwynhendy

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Places starting with M

• Manordeilo

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Places starting with N

• Nantycaws
• Newcastle Emlyn

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Places starting with O

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Places starting with P

• Panteg
• Parc Pensarn
• Pembrey
• Pencader
• Pendine
• Peniel
• Pensarn
• Pensarnau
• Penybanc
• Penygroes
• Pibwrlwyd
• Pontantwn
• Pontwelly
• Pontyates
• Pontyberem
• Pumpsaint
• Pwll

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Places starting with Q

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Places starting with R

• Red Roses

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Places starting with S

• Saint Clears
• Saron

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Places starting with T

• Tanerdy
• Trelech
• Trimsaran
• Trostre
• Tumble
• Tycroes

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Places starting with U

• Uplands Arms

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Places starting with V

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Places starting with W

• Whitemill
• Whitland

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Places starting with X

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Places starting with Y

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Places starting with Z

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