Weather in West Sussex

Calculated from weather data of Brighton City Airport (EGKA) between 2020 and 2024.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	8.0	8.1	8.1	8.3	6.7	9.1
February	9.1	10.9	9.5	10.5	7.5	10.0
March	10.8	11.8	9.6	11.8	10.5	10.5
April	13.2		12.5	13.9	11.1	14.9
May	16.5		16.8	16.6	14.4	17.3
June	19.8		22.0	19.5	19.0	19.3
July	21.4		20.3	22.6	20.6	20.6
August	21.1		20.6	23.5	19.8	22.6
September	19.5		21.8	18.8	20.5	19.8
October	16.0		17.1	17.6	16.1	14.6
November	11.5		11.5	13.1	10.8	12.5
December	9.0		10.5	5.0	9.5	8.5
Average	14.2	10.2	15.1	15.4	14.0	15.0

33rd 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	3.7	4	4	3	4	6
February	5.4	9	4	7	5	6
March	7.0	8	7	8	7	7
April	8.6		9	8	6	13
May	12.3		12	13	11	15
June	15.6		16	15	15	17
July	17.7		17	19	17	18
August	16.4		16	18	16	18
September	14.0		16	15	15	13
October	11.0		12	14	11	10
November	7.5		7	10	6	9
December	5.5		8	1	7	5
Average	10.0	7.0	10.6	11.1	9.9	11.4

87th 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	2
25 °C or warmer	0	11	11	2	10
20 °C or warmer	0	69	75	38	56
0 °C or colder	6	13	16	8	4

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	12.7	9	13	6	18	13
February	14.8	26	6	14	13	24
March	12.2	17	20	9	8	10
April	5.2		12	5	2	3
May	5.5		4	10	7	3
June	6.2		3	5	11	7
July	5.6		10	1	6	5
August	7.8		10	4	8	8
September	6.1		4	7	3	4
October	10.9		9	4	10	21
November	11.8		20	17	3	8
December	16.4		25	8	14	22
Average	10.0	17.3	10.6	7.2	8.0	10.4

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	18.2	18	21	15	19	20
February	21.0	20	15	26	20	29
March	20.9	19	21	18	21	25
April	18.2		19	20	18	18
May	18.6		18	18	22	21
June	19.2		19	20	16	22
July	20.3		23	18	19	24
August	19.2		18	16	20	20
September	18.5		17	15	17	20
October	19.6		17	19	21	23
November	19.3		20	23	16	19
December	19.9		23	16	20	19
Average	19.4	19.2	19.3	18.8	18.9	21.5

35th 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	W	W	W	W	SW
February	SW	NW	SW	SE	SW
March	SW	SW	E	SW	W
April		S	N	NE	E
May		N	SW	SW	S
June		NE	SW	SW	SW
July		SW	SW	SW	SW
August		SW	SW	SW	SW
September		S	W	SW	W
October		SW	SW	SW	SW
November		W	SW	NW	SW
December		SW	N	SW	SW

Prevailing wind direction

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

West Sussex weather Q&A

What is the warmest month in West Sussex?

The warmest month is July with an average temperature of 21 °C over the past years.

What is the coldest month in West Sussex?

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

Which month is the wettest in West Sussex?

Chance of precipitation is the highest in December with a probability of around 16.4 %.

Which month is the driest in West Sussex?

The least rainfall and snow can be expected in April. The probability is about 5.3 %.