Weather in West Sussex

Calculated from weather data of London Gatwick Airport (EGKK) between 2020 and 2024.

Maximum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	46.0	46.0	47.0	47.0	44.0	49.0
February	49.0	52.0	50.0	51.0	47.0	50.0
March	52.0	53.0	50.0	54.0	52.0	51.0
April	58.0		56.0	58.0	53.0	63.0
May	64.0		64.0	65.0	59.0	67.0
June	71.0		74.0	69.0	70.0	69.0
July	74.0		70.0	77.0	72.0	71.0
August	72.0		71.0	78.0	68.0	75.0
September	68.0		73.0	67.0	70.0	69.0
October	60.0		62.0	63.0	61.0	58.0
November	52.0		52.0	55.0	51.0	55.0
December	48.0		50.0	42.0	49.0	47.0
Average	58.0	50.0	60.0	61.0	58.0	60.0

12th highest temperature of United Kingdom

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	35.0	35	37	35	34	40
February	38.0	43	36	39	37	39
March	40.0	41	41	39	37	38
April	41.0		40	41	35	42
May	46.0		47	48	43	46
June	53.0		55	51	55	53
July	57.0		56	57	57	55
August	56.0		56	58	55	59
September	52.0		56	52	53	51
October	47.0		49	48	47	47
November	41.0		40	44	40	43
December	39.0		42	31	42	38
Average	45.0	40.0	46.0	46.0	45.0	46.0

54th 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
86 °F or warmer	0	2	6	0	9
77 °F or warmer	0	22	26	13	19
68 °F or warmer	0	87	90	68	87
32 °F or colder	14	28	30	37	16

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	15.2	11	15	6	29	16
February	17.4	25	4	14	24	26
March	14.2	17	27	10	10	9
April	7.2		14	5	3	5
May	6.8		4	7	14	1
June	7.4		2	5	14	11
July	7.6		12	2	11	8
August	7.9		7	5	8	8
September	7.6		5	8	8	4
October	13.7		12	8	12	28
November	15.1		22	22	6	15
December	17.3		25	9	16	21
Average	11.3	17.5	11.3	7.5	11.9	11.3

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 (miles per hour)

Month	Average	2024	2023	2022	2021	2020
January	9.2	10	11	7	9	9
February	10.9	10	8	14	10	14
March	10.7	10	11	9	10	12
April	9.1		9	11	9	9
May	8.8		10	8	10	9
June	8.7		9	8	7	9
July	8.5		10	8	8	9
August	8.4		9	8	9	9
September	8.4		8	8	8	9
October	8.9		8	8	9	9
November	8.7		10	9	8	8
December	9.4		11	7	10	9
Average	9.2	10.1	9.4	8.7	8.7	9.6

87th 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	W	SW	SE	SW
March	S	SW	E	W	N
April		NE	NE	NE	E
May		NE	SW	SW	NE
June		NE	SW	N	SW
July		SW	SW	SW	SW
August		SW	E	W	SW
September		S	NW	S	W
October		SW	SW	SW	SW
November		W	SW	W	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 74 °F over the past years.

What is the coldest month in West Sussex?

The coldest month is January with an average daytime temperature of 46 °F in the past few years.

Which month is the wettest in West Sussex?

Chance of precipitation is the highest in February with a probability of around 17.4 %.

Which month is the driest in West Sussex?

The least rainfall and snow can be expected in May. The probability is about 6.9 %.