WalesWhat’s the climate like in Swansea?
The current climate in Swansea features temperatures ranging from a high of 20°C to a low of 9°C throughout the year. The average yearly temperature is around 15°C. At night, temperatures in the colder months average around 5°C and in the warmer months around 15°C.
The highest temperature recorded in Swansea in recent years was 31°C in August 2022. The lowest daytime temperature recorded was 0°C in March 2018.
On average, Swansea receives 1000 mm of precipitation each year. For comparison, New York gets 1142 mm of precipitation annually.
Best time to visit Swansea?
The best time to visit Swansea for sunny weather is June through September. During this period, you'll have nice temperatures and not too much rain, making it a great time to visit Swansea. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
Climate Table of Swansea
The climate table of Swansea shows the average temperatures, rainfall, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 9 | 9 | 10 | 13 | 16 | 19 | 20 | 20 | 18 | 15 | 12 | 10 |
| Temp. min (°C) | 5 | 5 | 6 | 8 | 10 | 13 | 15 | 15 | 13 | 11 | 8 | 7 |
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| Precipitation (mm) | 119 | 83 | 78 | 43 | 54 | 61 | 63 | 83 | 78 | 109 | 111 | 118 |
| UV Index | 1 | 3 | 4 | 6 | 6 | 7 | 7 | 6 | 4 | 3 | 1 | 1 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 15°C
- Highest temperature: 20°C in July and August
- Lowest temperature: 9°C in January and February
- Precipitation: 1000 mm per year, averaging 83 mm per month
- Driest months: 43 mm in April, 54 mm in May and 61 mm in June
- Wettest months: 119 mm in January, 118 mm in December and 111 mm in November
Table of Contents
Average Temperature per Month in Swansea
This graph shows the average maximum temperatures per month in Swansea, Wales. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Swansea
This graph shows how much rainfall Swansea, Wales, gets on average per month. Rainfall is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of rainfall is measured in millimeters, and the average is calculated based on the recorded rainfall per month from past years.
Average UV Index per Month in Swansea
This graph shows the average UV index per month in Swansea, Wales. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in Swansea
This graph shows the average yearly temperature in Swansea, Wales. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Swansea
This chart shows the total yearly precipitation in Swansea, Wales, over the past few years. The total yearly precipitation, measured in millimeters, is the sum of all the rain that fell in the twelve months of that year.
Weather experiences in Swansea
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Average weather in Swansea by month
Click on a month below to see detailed weather info for Swansea. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
