Swansea weather and climate in 2025
Day
20 °C
Night
13 °C
Sea
18 °C
Precipitation
91 mm
in month
Rainy days
14 days
in month
Daylight
14 hours
average
Sunshine
6 hours
average
Humidity
85 %
Day
20 °C
Night
13 °C
Sea
18 °C
Precipitation
91 mm
in month
Rainy days
14 days
in month
Daylight
14 hours
average
Sunshine
6 hours
average
Humidity
85 %
Overview: Swansea
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Weather overview for Swansea
Weather overview
Swansea (United Kingdom) is a place with a mild climate. Temperatures during the day are in the range from 8 °C (46 °F) in February to 20 °C (68 °F) in July. The driest month is April with just 11 days of rain, on the contrary, the month when it rains the most is January with 18 days of rain. Temperatures during the night go from 3 °C (37 °F) in February to 13 °C (56 °F) in July.
January weather
The day temperature continues to descent, with its value being 8 °C (46 °F) in Swansea, and the descent of the night temperature can be observed too, its value is 3 °C (38 °F). The wet season is close to its peak. The rainfall amount continues to descent, with its value of 117 mm (4.62 in), while the number of rainy days is on its maximum in January. The wind speed reaches its maximum, the value of this measure is 6.
February weather
The beginning of the descent of the number of rainy days could be noticed, with its value of 13 days in Swansea, while the rainfall amount descents similarly to the previous month, the value of this measure is 79 mm (3.10 in). The minimum of the day temperature is observable, and the minimum of the night temperature is observable too, its value is 3 °C (37 °F). The number of sun hours (without clouds) starts to rise, with its value of 3 hours.
March weather
The beginning of the rise of the number of rainy days could be noticed, with its value being 14 days in Swansea, and the rainfall amount rise's start could be observed as well, with its value being 87 mm (3.43 in). The day temperature starts to rise, with its value of 10 °C (50 °F), and the night temperature rise's start could be observed as well. The rise of the number of sun hours (without clouds) can be observed, with its value being 4 hours.
April weather
The day temperature continues to rise, its value is 12 °C (54 °F) in Swansea, and the night temperature continues to rise as well, the value of this measure is 6 °C (42 °F). The number of rainy days reaches its minimum, with its value being 11 days, and the minimum of the rainfall amount is observable too. The number of sun hours (without clouds) continues to rise, the value of this measure is 5 hours.
May weather
The day temperature continues to rise, the value of this measure is 16 °C (60 °F) in Swansea, and the night temperature rises similarly to the previous month too, its value is 9 °C (47 °F). The number of rainy days rise's start could be observed in May. The rise of the number of sun hours (without clouds) can be observed, with its value of 6 hours. The humidity reaches its minimum, the value of this measure is 81 %.
June weather
The tourist season slowly starts in Swansea. The rise of the night temperature can be observed, and the rise of the day temperature can be observed as well. The number of sun hours (without clouds) is on its maximum in June. The wind speed is on its minimum, the value of this measure is 4. The day length reaches its maximum, with its value being 16 hours.
July weather
The day temperature is on its maximum in Swansea, and the maximum of the night temperature can be noticed too in July. The number of rainy days rise's start could be observed, with its value being 12 days, and the rainfall amount starts to rise as well, with its value of 83 mm (3.28 in). The tourist season is close to its peak this month. The number of sun hours (without clouds) descent's start could be observed, its value is 6 hours.
August weather
The tourist season continues in Swansea. The rise of the number of rainy days can be observed, with its value of 14 days, and the rainfall amount rises similarly to the previous month as well.
September weather
The day temperature descent's start could be observed, with its value of 18 °C (64 °F) in Swansea, and the night temperature starts to descent too, with its value of 11 °C (52 °F). The number of sun hours (without clouds) starts to descent in this month.
October weather
The wet season is at its beginning in Swansea. The number of rainy days starts to rise, the value of this measure is 17 days, and the beginning of the rise of the rainfall amount could be noticed too, the value of this measure is 130 mm (5.12 in). The night temperature descents similarly to the previous month, its value is 9 °C (48 °F), and the day temperature descents similarly to the previous month as well, with its value being 14 °C (58 °F). The number of sun hours (without clouds) descents similarly to the previous month, the value of this measure is 3 hours.
November weather
The day temperature descents similarly to the previous month, the value of this measure is 11 °C (51 °F) in Swansea, and the night temperature descents similarly to the previous month too, its value is 6 °C (43 °F). The wet season continues. The descent of the number of sun hours (without clouds) can be observed, with its value being 2 hours. The rainfall amount is on its maximum, with its value of 132 mm (5.20 in).
December weather
The day temperature descents similarly to the previous month, with its value of 9 °C (47 °F) in Swansea, and the night temperature continues to descent as well, its value is 4 °C (39 °F). There is pending wet season. The rainfall amount starts to descent in December. The minimum of the number of sun hours (without clouds) is observable in this month. The humidity is on its maximum, its value is 91 %.
FAQs
Is there a dry season in April in Swansea?
No, April is not a dry month in Swansea, expect rain approximately 11 days in a month.
How many rainy days can I expect in May in Swansea?
There are 12 days, which are rainy in Swansea in May, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.9 days of the week, or in general - 41 % days.
Is June a good month to visit Swansea?
There are good conditions for visiting in June in Swansea. There are some people, who may feel a slight chill at 18 °C (65 °F), but others will feel perfectly fine. The temperature of 11 °C (52 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.
What is the temperature in Swansea during the day in July?
In Swansea in July, the average daily temperatures will be 20 °C (68 °F). A comfortable temperature for most people, where it is neither too cold nor too hot, and a large number of activities can be carried out comfortably, including sunbathing by the water. Lighter clothing will be suitable - shorts, skirts, t-shirts, jackets; a light sweater and long trousers may also be useful.
Is August part of the wet season in Swansea?
No, there is no wet season in August in Swansea - you can expect 14 days of rain during the month.
What is the sea temperature in Swansea in September?
In September in Swansea expect the sea to be warm at 17 °C (63 °F). At this sea temperature, swimming probably won't be the best experience. You probably won't like to stay in water for a long time. On the other hand, there are a minority of people who seek these conditions.
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