Weather in City and County of Swansea

Calculated from weather data of Pembrey Sands (EGOP) between 2020 and 2024.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	8.4	8.0	8.6	9.0	6.7	9.0
February	9.1	10.0	9.3	10.1	8.0	9.4
March	10.4	10.9	9.5	12.1	10.5	10.4
April	12.9	12.0	12.5	13.1	12.0	15.5
May	15.9		17.1	15.5	13.5	17.0
June	18.5		20.5	17.8	18.3	18.0
July	20.0		18.6	21.3	20.5	17.6
August	19.2		19.1	20.5	19.0	19.5
September	18.0		19.8	18.1	19.1	17.8
October	14.9		15.5	16.3	15.4	13.6
November	11.3		11.5	10.4	11.5	12.4
December	9.4		10.6	6.0	9.9	9.1
Average	13.6	10.2	14.4	14.3	14.0	14.2

60th highest temperature of United Kingdom

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	3.3	3	4	3	2	5
February	4.1	6	4	6	3	6
March	4.2	5	5	4	4	4
April	5.3	7	6	5	3	6
May	7.8		7	10	7	8
June	11.4		12	11	11	11
July	12.6		13	12	13	12
August	13.1		13	12	13	15
September	11.0		14	10	12	10
October	9.2		10	11	10	8
November	5.8		6	6	6	6
December	4.8		7	-1	6	4
Average	7.4	5.0	8.4	7.3	7.6	7.8

46th lowest temperature of United Kingdom

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Cold and hot days

Number of days	2024	2023	2022	2021	2020
30 °C or warmer	0	0	1	0	0
25 °C or warmer	0	5	3	5	4
20 °C or warmer	0	32	37	30	28
0 °C or colder	10	24	33	28	15

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	5.4	16	6	0	1	5
February	5.6	34	2	0	0	6
March	6.1	26	0	3	2	3
April	4.4	24	1	0	2	0
May	0.6		0	0	0	0
June	1.7		0	1	0	1
July	1.1		2	0	0	1
August	1.3		3	1	0	0
September	3.3		5	0	4	4
October	6.6		27	0	1	0
November	8.1		19	6	2	5
December	7.5		32	0	1	0
Average	5.6	24.6	6.5	0.8	1.1	1.7

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (km/h)

Month	Average	2024	2023	2022	2021	2020
January	24.0	25	27	21	22	28
February	29.4	27	21	39	26	45
March	24.7	26	27	21	23	27
April	21.0	29	22	21	17	17
May	21.0		19	23	27	20
June	21.3		18	23	15	24
July	20.9		31	20	0	27
August	24.2		25	20	22	24
September	24.1		24	23	19	22
October	27.5		23	31	30	28
November	26.7		29	33	21	29
December	26.8		34	16	27	25
Average	24.1	26.8	24.5	23.8	20.5	25.3

7th highest wind speed of United Kingdom

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2024	2023	2022	2021	2020
January	SW	W	W	SW	SW
February	SW	W	W	S	SW
March	S	SW	SE	SW	SW
April	SW	SW	SW	N	S
May		N	SW	SW	SW
June		SW	SW	SW	W
July		SW	W	N	SW
August		W	W	SW	SW
September		SW	SW	SW	SW
October		SW	SW	SW	W
November		W	SW	W	SW
December		W	E	SW	SW

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.

City and County of Swansea weather Q&A

What is the warmest month in City and County of Swansea?

The warmest month is July with an average temperature of 20 °C over the past years.

What is the coldest month in City and County of Swansea?

The coldest month is January with an average daytime temperature of 8 °C in the past few years.

Which month is the wettest in City and County of Swansea?

Chance of precipitation is the highest in November with a probability of around 8.1 %.

Which month is the driest in City and County of Swansea?

The least rainfall and snow can be expected in May. The probability is about 0.6 %.