Jameston weather
The Jameston weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for holidays in Jameston, Pembrokeshire, Wales in 2026/2027.
Jameston weather averages
Check the Jameston 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 Jameston, Pembrokeshire, Wales.
Jameston weather by month
Check the weather for Jameston, Pembrokeshire, Wales for a particular month by selecting from the list below. This gives the best indication of what to expect from the weather months in advance.
Jameston weather in January
The average maximum daytime temperature in Jameston in January 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 Jameston during January.
- 8°C max day temperature
8 - 2 hours of sunshine per day
2 - 20 days with some rainfall
20 - 3°C min night temperature
3 - 123 mm of monthly rainfall
123
On average 123 mm (4.8 inches) of rain normally falls in Jameston during January with rain falling on 20 days of the month.
Jameston weather in February
The average maximum daytime temperature in Jameston in February 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 3 hours of sunshine a day in Jameston during February.
- 8°C max day temperature8
- 3 hours of sunshine per day
3 - 16 days with some rainfall
16 - 3°C min night temperature3
- 86 mm of monthly rainfall
86
On average 86 mm (3.4 inches) of rain normally falls in Jameston during February with rain falling on 16 days of the month.
Jameston weather in March
The average maximum daytime temperature in Jameston in March is a cool 9°C (48°F), while the average minimum night-time temperature is a cold 4°C (39°F). You can expect on average 4 hours of sunshine a day in Jameston during March.
- 9°C max day temperature9
- 4 hours of sunshine per day
4 - 17 days with some rainfall17
- 4°C min night temperature
4 - 91 mm of monthly rainfall91
On average 91 mm (3.6 inches) of rain normally falls in Jameston during March with rain falling on 17 days of the month.
Jameston weather in April
The average maximum daytime temperature in Jameston in April is a cool 11°C (52°F), while the average minimum night-time temperature is a cold 5°C (41°F). You can expect on average 6 hours of sunshine a day in Jameston during April.
- 11°C max day temperature11
- 6 hours of sunshine per day
6 - 13 days with some rainfall
13 - 5°C min night temperature5
- 68 mm of monthly rainfall
68
On average 68 mm (2.7 inches) of rain normally falls in Jameston during April with rain falling on 13 days of the month.
Jameston weather in May
The average maximum daytime temperature in Jameston in May is a comfortable 15°C (59°F), while the average minimum night-time temperature is a cool 8°C (46°F). You can expect on average 7 hours of sunshine a day in Jameston during May.
- 15°C max day temperature
15 - 7 hours of sunshine per day
7 - 13 days with some rainfall13
- 8°C min night temperature8
- 60 mm of monthly rainfall
60
On average 60 mm (2.4 inches) of rain normally falls in Jameston during May with rain falling on 13 days of the month.
Jameston weather in June
The average maximum daytime temperature in Jameston 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 7 hours of sunshine a day in Jameston during June.
- 17°C max day temperature17
- 7 hours of sunshine per day7
- 13 days with some rainfall13
- 10°C min night temperature10
- 74 mm of monthly rainfall74
On average 74 mm (2.9 inches) of rain normally falls in Jameston during June with rain falling on 13 days of the month.
Jameston weather in July
The average maximum daytime temperature in Jameston in July 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 7 hours of sunshine a day in Jameston during July.
- 19°C max day temperature
19 - 7 hours of sunshine per day7
- 12 days with some rainfall
12 - 12°C min night temperature
12 - 66 mm of monthly rainfall66
On average 66 mm (2.6 inches) of rain normally falls in Jameston during July with rain falling on 12 days of the month.
Jameston weather in August
The average maximum daytime temperature in Jameston 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 Jameston during August.
- 19°C max day temperature19
- 6 hours of sunshine per day6
- 14 days with some rainfall14
- 12°C min night temperature12
- 97 mm of monthly rainfall97
On average 97 mm (3.8 inches) of rain normally falls in Jameston during August with rain falling on 14 days of the month.
Jameston weather in September
The average maximum daytime temperature in Jameston in September is a comfortable 17°C (63°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 5 hours of sunshine a day in Jameston during September.
- 17°C max day temperature17
- 5 hours of sunshine per day
5 - 15 days with some rainfall15
- 11°C min night temperature11
- 103 mm of monthly rainfall
103
On average 103 mm (4.1 inches) of rain normally falls in Jameston during September with rain falling on 15 days of the month.
Jameston weather in October
The average maximum daytime temperature in Jameston 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 Jameston during October.
- 14°C max day temperature14
- 3 hours of sunshine per day3
- 18 days with some rainfall18
- 8°C min night temperature8
- 129 mm of monthly rainfall129
On average 129 mm (5.1 inches) of rain normally falls in Jameston during October with rain falling on 18 days of the month.
Jameston weather in November
The average maximum daytime temperature in Jameston in November is a cool 10°C (50°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 2 hours of sunshine a day in Jameston during November.
- 10°C max day temperature10
- 2 hours of sunshine per day2
- 19 days with some rainfall19
- 6°C min night temperature6
- 133 mm of monthly rainfall133
On average 133 mm (5.2 inches) of rain normally falls in Jameston during November with rain falling on 19 days of the month.
Jameston weather in December
The average maximum daytime temperature in Jameston in December is a cool 9°C (48°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 Jameston during December.
- 9°C max day temperature9
- 2 hours of sunshine per day2
- 20 days with some rainfall20
- 4°C min night temperature4
- 138 mm of monthly rainfall138
On average 138 mm (5.4 inches) of rain normally falls in Jameston during December with rain falling on 20 days of the month.