Portsmouth (Portsmouth) weather

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Forecast days

Mon 18 May

Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 11° Celsius;

Sunrise: 05:12

Sunset: 20:51
Light showers changing to overcast by lunchtime.

M UV

L Pollution

L Pollen
Next high tide: 13:07 for
Old Portsmouth Beach (Victoria Pier) (Beach)
Eastney (Beach)

2.2 miles
Mon 18 May

Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius;
Tue 19 May

Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 12° Celsius;

Sunrise: 05:10

Sunset: 20:52
Heavy rain changing to cloudy by late morning.

H UV

L Pollution

L Pollen
First high tide: 01:26 for
Old Portsmouth Beach (Victoria Pier) (Beach)
Eastney (Beach)

2.2 miles
Tue 19 May

Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius;
Wed 20 May

Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 12° Celsius;

Sunrise: 05:09

Sunset: 20:54
Cloudy changing to sunny intervals by lunchtime.

H UV

L Pollution

L Pollen
First high tide: 02:16 for
Old Portsmouth Beach (Victoria Pier) (Beach)
Eastney (Beach)

2.2 miles
Wed 20 May

Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius;
Thu 21 May

Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 13° Celsius;

Sunrise: 05:08

Sunset: 20:55
Sunny intervals.

H UV

L Pollution

L Pollen
First high tide: 03:12 for
Old Portsmouth Beach (Victoria Pier) (Beach)
Eastney (Beach)

2.2 miles
Thu 21 May

Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius;
Fri 22 May

Maximum daytime temperature: 23° Celsius; Minimum nighttime temperature: 13° Celsius;

Sunrise: 05:07

Sunset: 20:56
Sunny changing to partly cloudy by nighttime.

H UV

L Pollution

H Pollen
First high tide: 04:15 for
Old Portsmouth Beach (Victoria Pier) (Beach)
Eastney (Beach)

2.2 miles
Fri 22 May

Maximum daytime temperature: 23 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius;
Sat 23 May

Maximum daytime temperature: 23° Celsius; Minimum nighttime temperature: 11° Celsius;

Sunrise: 05:05

Sunset: 20:58
Sunny intervals.

H UV

No pollution data.

No pollen data.
First high tide: 05:20 for
Old Portsmouth Beach (Victoria Pier) (Beach)
Eastney (Beach)

2.2 miles
Sat 23 May

Maximum daytime temperature: 23 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius;
Sun 24 May

Maximum daytime temperature: 23° Celsius; Minimum nighttime temperature: 12° Celsius;

Sunrise: 05:04

Sunset: 20:59
Sunny.

H UV

No pollution data.

No pollen data.
First high tide: 06:27 for
Old Portsmouth Beach (Victoria Pier) (Beach)
Eastney (Beach)

2.2 miles
Sun 24 May

Maximum daytime temperature: 23 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius;

Light showers changing to overcast by lunchtime.

Sunrise: 05:12

Sunset: 20:51

M UV

L Pollution

L Pollen

Next high tide: 13:07 for

Old Portsmouth Beach (Victoria Pier) (Beach)

7 day forecast for Portsmouth

Today (18 May 2026)

Time	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	80%	60%	70%	60%	50%	20%	10%	10%	<5%	10%	10%	20%	20%	40%	80%
Temperature (°C)	11°	12°	12°	12°	13°	13°	13°	13°	13°	13°	13°	13°	12°	12°	12°
Feels like temperature (°C)	9°	10°	10°	10°	10°	10°	11°	11°	11°	11°	11°	11°	11°	10°	10°
Wind direction and speed (mph)	WSW 9	WSW 10	WSW 12	WSW 12	SW 13	SW 13	SW 13	SW 12	SW 12	SW 11	SSW 10	SSW 10	S 9	S 10	S 11
Wind gust (mph)	23	25	26	27	27	27	26	26	24	22	20	18	18	20	22
Visibility (description)	G	G	G	G	G	G	G	VG	VG	VG	VG	G	G	M	G
Humidity	75%	74%	70%	70%	67%	66%	63%	63%	63%	64%	65%	69%	75%	76%	77%
UV	3	3	3	3	3	2	4	3	1	1	1	1	-	-	-

Tuesday (19 May 2026)

Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	90%	≥95%	≥95%	≥95%	≥95%	≥95%	≥95%	≥95%	80%	50%	20%	20%	40%	60%	40%	20%	<5%	<5%	<5%	10%	<5%	<5%	10%	10%
Temperature (°C)	12°	12°	12°	12°	12°	12°	12°	11°	12°	13°	14°	15°	15°	15°	15°	15°	15°	15°	15°	14°	14°	14°	13°	13°
Feels like temperature (°C)	10°	10°	10°	10°	9°	9°	9°	8°	9°	10°	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°	11°	11°	11°	11°
Wind direction and speed (mph)	S 12	S 12	S 13	S 13	S 14	SSE 16	SSE 17	S 17	S 16	SSW 14	SW 13	SW 14	SW 15	SW 15	SW 15	SW 15	SW 16	SW 16	SW 16	WSW 16	WSW 16	SW 15	SW 15	SW 15
Wind gust (mph)	23	24	25	27	29	31	32	32	31	29	28	29	30	31	31	31	31	31	31	30	29	29	29	28
Visibility (description)	M	M	M	M	M	P	P	P	P	P	P	G	G	G	G	G	G	G	G	G	G	G	G	G
Humidity	81%	86%	91%	92%	92%	93%	93%	94%	95%	93%	89%	82%	78%	80%	81%	79%	75%	75%	75%	76%	80%	83%	84%	84%
UV	-	-	-	-	-	1	1	1	1	2	3	4	5	4	4	4	3	2	1	1	1	-	-	-

Wednesday (20 May 2026)

Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	20%	30%	40%	40%	50%	50%	40%	20%	20%	20%	10%	20%	10%	10%	10%	10%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%
Temperature (°C)	13°	13°	13°	13°	13°	13°	13°	13°	13°	14°	14°	15°	15°	16°	16°	16°	17°	16°	16°	15°	15°	14°	14°	13°
Feels like temperature (°C)	11°	11°	11°	11°	11°	11°	11°	11°	11°	11°	12°	12°	13°	13°	13°	13°	13°	13°	13°	13°	13°	12°	12°	12°
Wind direction and speed (mph)	WSW 15	SW 15	SW 15	WSW 15	WSW 14	WSW 14	WSW 13	WSW 13	WSW 13	WSW 14	WSW 14	WSW 15	WSW 15	WSW 16	WSW 16	WSW 17	WSW 17	WSW 16	WSW 15	WSW 14	WSW 13	WSW 11	WSW 9	WSW 8
Wind gust (mph)	29	30	29	28	28	28	27	27	26	27	28	29	30	30	30	30	29	28	26	23	20	18	16	15
Visibility (description)	G	G	G	G	M	M	M	M	G	G	G	G	G	G	G	G	G	VG	VG	G	G	G	G	G
Humidity	84%	84%	85%	86%	86%	87%	88%	87%	85%	82%	83%	79%	76%	73%	70%	70%	70%	69%	70%	74%	76%	83%	85%	86%
UV	-	-	-	-	-	1	1	1	1	3	4	5	5	6	5	4	3	2	1	1	1	-	-	-

Thursday (21 May 2026)

Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	<5%	<5%	<5%	<5%	10%	10%	10%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%
Temperature (°C)	13°	13°	13°	13°	13°	13°	13°	13°	14°	15°	16°	16°	17°	17°	17°	18°	18°	18°	18°	17°	17°	16°	15°	15°
Feels like temperature (°C)	12°	12°	12°	12°	12°	12°	12°	12°	13°	14°	15°	15°	15°	16°	16°	16°	17°	17°	17°	17°	16°	15°	14°	14°
Wind direction and speed (mph)	SW 7	SW 7	SW 6	SW 6	SSW 6	SSW 6	SSW 6	SSW 6	SSW 6	SSW 7	S 7	S 8	SSE 8	SSE 8	SSE 8	SSE 8	SSE 7	SE 6	SE 6	SE 6	ESE 7	ESE 7	ESE 7	E 7
Wind gust (mph)	15	15	15	15	15	14	14	15	15	16	17	17	17	17	17	15	15	14	13	13	14	15	17	17
Visibility (description)	G	M	M	M	M	M	M	G	G	G	G	VG	VG	VG	VG	VG	G	G	VG	VG	VG	VG	VG	G
Humidity	88%	90%	91%	92%	92%	92%	91%	86%	84%	78%	75%	73%	69%	67%	66%	65%	64%	63%	63%	64%	68%	74%	77%	78%
UV	-	-	-	-	-	1	1	1	2	3	4	5	6	6	6	4	3	2	1	1	1	-	-	-

Friday (22 May 2026)

Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	10%	10%	20%	20%	10%	10%
Temperature (°C)	15°	15°	14°	14°	14°	14°	14°	15°	16°	17°	17°	18°	19°	19°	20°	20°	20°	20°	20°	19°	19°	18°	17°	16°
Feels like temperature (°C)	14°	14°	13°	13°	13°	13°	13°	14°	14°	15°	16°	16°	17°	18°	18°	18°	19°	19°	19°	18°	18°	17°	16°	16°
Wind direction and speed (mph)	ESE 7	ESE 7	ESE 7	ESE 7	ESE 6	ESE 6	SE 6	SE 7	SE 8	SSE 8	SSE 9	SSE 9	SSE 9	SSE 9	SSE 10	SSE 9	SSE 9	SSE 8	SSE 8	S 7	S 7	SE 7	SSE 7	ESE 7
Wind gust (mph)	17	17	17	17	17	17	17	18	19	19	18	19	19	19	19	19	18	16	16	17	16	16	16	15
Visibility (description)	G	G	G	G	G	G	G	G	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	G	G	G	G	G
Humidity	77%	79%	82%	84%	84%	84%	83%	77%	74%	70%	66%	65%	63%	60%	59%	59%	59%	60%	62%	65%	70%	75%	79%	81%
UV	-	-	-	-	-	1	1	1	2	3	4	5	6	6	5	4	3	2	1	1	1	-	-	-

Saturday (23 May 2026)

Time	00:00	01:00	04:00	07:00	10:00	13:00	16:00	19:00	22:00
Weather symbols
Chance of precipitation	10%	20%	20%	20%	10%	10%	10%	10%	10%
Temperature (°C)	16°	15°	14°	14°	18°	21°	22°	20°	16°
Feels like temperature (°C)	15°	15°	14°	13°	17°	19°	20°	19°	15°
Wind direction and speed (mph)	SSE 7	S 7	WSW 6	WNW 7	WNW 8	SW 9	SW 9	SW 8	W 7
Wind gust (mph)	16	13	13	16	18	20	19	16	12
Visibility (description)	G	M	M	M	G	VG	VG	VG	G
Humidity	83%	87%	89%	91%	77%	63%	57%	62%	80%
UV	-	-	-	1	4	6	3	1	-

Sunday (24 May 2026)

Time	01:00	04:00	07:00	10:00	13:00	16:00	19:00	22:00
Weather symbols
Chance of precipitation	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%
Temperature (°C)	14°	12°	14°	19°	21°	22°	21°	16°
Feels like temperature (°C)	13°	12°	13°	18°	21°	21°	20°	15°
Wind direction and speed (mph)	NW 6	NW 5	NW 5	ESE 6	SSE 7	S 7	S 6	SSW 5
Wind gust (mph)	10	10	13	16	16	15	12	9
Visibility (description)	G	P	M	G	G	VG	VG	G
Humidity	86%	92%	87%	71%	59%	55%	61%	82%
UV	-	-	1	4	6	3	1	-

UK video forecast

Portsmouth weather map

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Flood alerts in force for England

Environment Agency

London & South East England weather forecast

Headline:

Showers, heavy at times.

Today:

Bright spells and frequent showers through the day, some of which are likely to be heavy and thundery. Winds are light becoming breezy along the coast. Maximum temperature 16 °C.

Tonight:

Turning increasingly cloudy from the west as a band of rain moves eastwards overnight across all areas by the morning. Feeling cool in the wind. Minimum temperature 7 °C.

Tuesday:

Cloudy and breezy, with rain clearing to the east during the morning. Followed by frequent heavy showers in the afternoon before easing into the evening. Maximum temperature 19 °C.

Outlook for Wednesday to Friday:

Wednesday breezy with showers. Becoming more settled on Thursday with only the odd isolated shower. A dry and warm sunny day on Friday. Temperatures near average, trending upwards.

Updated: 04:00 (UTC+1) on Mon 18 May 2026

UK long range weather forecast

High pressure is expected to bring a good deal of fair, warm weather to the UK during the Bank Holiday weekend. It may be cloudier with a chance of some showers across Northern Ireland and Scotland, but even here it will be much warmer than the previous week and there will be plenty of dry weather around too. Through the following week, high pressure is expected to broadly remain in place for much of the UK, and fine weather is likely to continue for most of the country. There may be occasions where low pressure to the north may bring some brief spells of rain across northern parts, but in general fair weather will dominate. Temperatures are expected to be above normal, feeling very warm at times with light winds.

Updated: 13:00 (UTC+1) on Sun 17 May 2026

Fair weather is more likely to dominate, at least at first. Rain and showers are possible at times, mainly across Northern Ireland and Scotland, but the main emphasis remains for fine and dry weather for most places. As we head towards mid-June, more mixed conditions are likely with spells of rain and showers. Drier weather is expected between any bouts of wetter weather, these drier interludes will tend to last longer across the south and east of England. Temperatures are most likely to be near or slightly above average overall, with some warm or very warm weather possible.

Updated: 14:00 (UTC+1) on Sun 17 May 2026

Portsmouth (Portsmouth) weather

Find a forecast

Forecast days

Mon 18 May

Mon 18 May

Tue 19 May

Tue 19 May

Wed 20 May

Wed 20 May

Thu 21 May

Thu 21 May

Fri 22 May

Fri 22 May

Sat 23 May

Sat 23 May

Sun 24 May

Sun 24 May

7 day forecast for Portsmouth

Tooltip header

UK video forecast

London & South East England weather forecast

Headline:

Today:

Tonight:

Tuesday:

Outlook for Wednesday to Friday:

UK long range weather forecast

Nearest forecasts

More from the Met Office

Causes of climate change

Satellite image of the month - 2021

Lessons and legacy of the Great Storm of 1987

Summer weather during autumn

Earth spiral mobile DIY activity

Windy days DIY activity

Portsmouth (Portsmouth) weather

Find a forecast

Forecast days

Mon 18 May

Mon 18 May

Tue 19 May

Tue 19 May

Wed 20 May

Wed 20 May

Thu 21 May

Thu 21 May

Fri 22 May

Fri 22 May

Sat 23 May

Sat 23 May

Sun 24 May

Sun 24 May

7 day forecast for Portsmouth

UK video forecast

London & South East England weather forecast

Monday 18 May - Friday 22 May

Headline:

Today:

Tonight:

Tuesday:

Outlook for Wednesday to Friday:

UK long range weather forecast

Friday 22 May - Sunday 31 May

Monday 1 Jun - Monday 15 Jun

Nearest forecasts

More from the Met Office

Causes of climate change

Satellite image of the month - 2021

Lessons and legacy of the Great Storm of 1987

Summer weather during autumn

Earth spiral mobile DIY activity

Windy days DIY activity