Isle of Portland (Dorset) weather

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Forecast days

Today

Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 14° Celsius;

Sunrise: 06:47

Sunset: 19:21

Cloudy changing to light rain by nighttime.

M UV

L Pollution

No pollen data.

Next low tide: 23:52 for
Church Ope Cove (Beach)

Today

Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 14° Celsius;
Wed 17 Sep

Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 16° Celsius;

Sunrise: 06:49

Sunset: 19:19

Overcast.

M UV

L Pollution

No pollen data.

First high tide: 03:54 for
Church Ope Cove (Beach)

Wed 17 Sep

Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 16° Celsius;
Thu 18 Sep

Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 15° Celsius;

Sunrise: 06:50

Sunset: 19:16

Overcast.

M UV

L Pollution

No pollen data.

First high tide: 05:09 for
Church Ope Cove (Beach)

Thu 18 Sep

Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 15° Celsius;
Fri 19 Sep

Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 14° Celsius;

Sunrise: 06:52

Sunset: 19:14

Overcast changing to sunny intervals by late morning.

M UV

L Pollution

No pollen data.

First high tide: 05:59 for
Church Ope Cove (Beach)

Fri 19 Sep

Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 14° Celsius;
Sat 20 Sep

Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 10° Celsius;

Sunrise: 06:54

Sunset: 19:12

Cloudy.

M UV

L Pollution

No pollen data.

First high tide: 06:42 for
Church Ope Cove (Beach)

Sat 20 Sep

Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 10° Celsius;
Sun 21 Sep

Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 7° Celsius;

Sunrise: 06:55

Sunset: 19:10

Sunny intervals changing to partly cloudy by early evening.

M UV

No pollution data.

No pollen data.

First high tide: 07:23 for
Church Ope Cove (Beach)

Sun 21 Sep

Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 7° Celsius;
Mon 22 Sep

Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 8° Celsius;

Sunrise: 06:57

Sunset: 19:07

Sunny intervals changing to cloudy by lunchtime.

M UV

No pollution data.

No pollen data.

First high tide: 08:04 for
Church Ope Cove (Beach)

Mon 22 Sep

Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 8° Celsius;

Cloudy changing to light rain by nighttime.

Sunrise: 06:47

Sunset: 19:21

M UV

L Pollution

No pollen data.

Next low tide: 23:52 for

Church Ope Cove (Beach)

7 day forecast for Isle of Portland

Today (16 September 2025)

Time	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	10%	20%	10%	10%	20%	50%	60%
Temperature (°C)	16°	16°	16°	16°	15°	15°	15°
Feels like temperature (°C)	12°	12°	12°	12°	12°	12°	12°
Wind direction and speed (mph)	WSW 23	WSW 22	WSW 20	WSW 19	WSW 17	WSW 17	SW 17
Wind gust (mph)	30	28	26	24	23	23	23
Visibility (description)	VG	VG	VG	VG	VG	VG	VG
Humidity	75%	75%	75%	75%	77%	82%	84%
UV	1	1	1	-	-	-	-

Wednesday (17 September 2025)

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	70%	80%	80%	90%	90%	80%	40%	20%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	10%	10%	10%	10%	10%	10%	10%	10%	10%
Temperature (°C)	15°	15°	15°	16°	16°	16°	16°	16°	16°	16°	17°	17°	17°	17°	17°	17°	17°	17°	17°	17°	17°	17°	17°	17°
Feels like temperature (°C)	12°	12°	12°	12°	12°	11°	11°	11°	11°	11°	12°	12°	12°	12°	12°	12°	12°	13°	13°	13°	13°	13°	13°	13°
Wind direction and speed (mph)	SW 17	SW 18	SW 19	SW 21	SW 23	SW 25	SW 26	SW 27	SW 28	SW 28	SW 27	SW 26	SW 26	SW 27	SW 27	SW 27	SW 26	SW 25	SW 25	SW 24	SW 23	SW 22	SW 22	SW 22
Wind gust (mph)	25	27	29	32	32	33	35	36	37	37	37	37	37	37	37	37	36	34	33	32	32	31	31	30
Visibility (description)	VG	VG	VG	VG	G	VG	E	E	E	E	E	E	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	84%	86%	85%	85%	86%	85%	85%	85%	85%	85%	85%	85%	85%	85%	86%	87%	88%	89%	90%	91%	92%	92%	92%	92%
UV	-	-	-	-	-	-	1	1	1	1	2	2	3	3	3	2	1	1	1	1	-	-	-	-

Thursday (18 September 2025)

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	10%	<5%	<5%	<5%	<5%	<5%	10%	10%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%
Temperature (°C)	17°	17°	17°	17°	17°	17°	17°	17°	17°	17°	18°	18°	18°	18°	19°	19°	19°	18°	18°	18°	17°	17°	17°	17°
Feels like temperature (°C)	13°	13°	13°	13°	13°	13°	13°	13°	13°	14°	14°	14°	15°	15°	15°	15°	15°	15°	15°	15°	15°	15°	16°	15°
Wind direction and speed (mph)	SW 22	SW 22	SW 21	SW 21	SW 22	SW 22	SW 22	SW 22	SW 21	SW 21	SW 21	SW 21	SW 21	SW 21	SW 20	SW 20	SW 18	SW 17	SW 16	SW 15	SW 13	SSW 12	SSW 12	SSW 11
Wind gust (mph)	31	30	30	29	29	28	28	28	27	29	29	29	28	28	27	26	24	23	19	15	16	16	14	14
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	93%	92%	93%	93%	93%	93%	92%	92%	92%	92%	92%	91%	91%	91%	86%	86%	86%	86%	86%	87%	87%	87%	87%	87%
UV	-	-	-	-	-	-	1	1	1	1	2	2	3	3	3	2	1	1	1	1	-	-	-	-

Friday (19 September 2025)

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%	10%	10%	10%	20%	20%	20%	20%	30%
Temperature (°C)	17°	17°	17°	16°	16°	16°	16°	16°	16°	17°	17°	18°	18°	18°	18°	18°	18°	18°	17°	17°	16°	16°	16°	16°
Feels like temperature (°C)	15°	15°	15°	15°	15°	15°	14°	14°	14°	15°	15°	16°	16°	16°	16°	16°	16°	16°	16°	15°	15°	15°	15°	15°
Wind direction and speed (mph)	SSW 11	SW 10	SSW 10	SW 11	SW 11	SW 12	SW 12	SW 11	SW 12	SW 12	SSW 13	SW 13	SSW 13	SSW 13	SW 13	SW 13	SSW 13	SW 12	SW 12	SW 11	SW 10	SW 10	SW 10	SW 10
Wind gust (mph)	14	13	13	11	12	12	12	15	17	18	19	18	17	16	16	16	15	15	13	12	11	11	11	12
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	86%	86%	87%	86%	87%	88%	89%	88%	88%	87%	87%	87%	86%	86%	86%	86%	87%	87%	86%	87%	86%	86%	90%	91%
UV	-	-	-	-	-	-	1	1	1	1	2	3	3	3	2	2	1	1	1	1	-	-	-	-

Saturday (20 September 2025)

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	30%	20%	30%	30%	30%	30%	30%	30%	30%	30%	40%	40%	40%	40%	30%	30%	30%	30%	30%	20%	20%	10%	10%	10%
Temperature (°C)	16°	16°	16°	16°	15°	15°	15°	15°	15°	15°	15°	16°	16°	17°	17°	17°	17°	16°	16°	15°	15°	14°	14°	14°
Feels like temperature (°C)	15°	15°	14°	14°	14°	14°	13°	13°	13°	13°	14°	14°	14°	14°	14°	14°	14°	14°	13°	12°	12°	11°	11°	11°
Wind direction and speed (mph)	SW 9	WSW 9	WSW 10	W 9	W 9	WNW 10	WNW 10	NW 10	NW 10	NW 11	NW 12	W 12	W 13	WNW 14	W 14	W 14	W 15	W 15	WNW 15	WNW 15	NW 15	NW 15	NW 15	NW 15
Wind gust (mph)	11	12	12	12	11	12	12	15	13	15	15	15	15	17	17	18	19	20	21	21	21	21	22	23
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	90%	91%	91%	90%	90%	92%	90%	89%	89%	86%	85%	84%	82%	81%	81%	82%	81%	82%	82%	80%	78%	79%	79%	80%
UV	-	-	-	-	-	-	1	1	1	1	1	2	2	2	3	2	1	1	1	1	-	-	-	-

Sunday (21 September 2025)

Time	00:00	01:00	04:00	07:00	10:00	13:00	16:00	19:00	22:00
Weather symbols
Chance of precipitation	20%	20%	30%	30%	30%	30%	20%	20%	20%
Temperature (°C)	13°	13°	12°	11°	13°	14°	14°	12°	10°
Feels like temperature (°C)	11°	10°	9°	8°	10°	11°	11°	9°	7°
Wind direction and speed (mph)	NW 14	NW 14	NW 14	NNW 14	N 15	N 17	NNE 16	NNE 16	NNE 16
Wind gust (mph)	22	20	20	19	21	22	24	24	23
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	81%	81%	82%	84%	81%	73%	71%	68%	72%
UV	-	-	-	1	3	4	1	1	-

Monday (22 September 2025)

Time	01:00	04:00	07:00	10:00	13:00	16:00	19:00	22:00
Weather symbols
Chance of precipitation	20%	20%	10%	10%	10%	10%	10%	10%
Temperature (°C)	9°	9°	8°	12°	15°	15°	12°	11°
Feels like temperature (°C)	6°	5°	4°	9°	11°	11°	9°	7°
Wind direction and speed (mph)	NNE 16	NNE 16	NNE 16	NE 17	NE 17	NE 17	NE 17	NE 17
Wind gust (mph)	22	22	23	23	23	22	21	19
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	75%	77%	79%	75%	64%	58%	61%	69%
UV	-	-	1	3	4	1	1	-

UK video forecast

Isle of Portland weather map

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WARNING

Flood warnings in force for England

Environment Agency

South West England weather forecast

Headline:

Remaining changeable with rain tonight.

This Evening and Tonight:

Cloudy this evening then turning wet and windy overnight with outbreaks of rain sweeping eastwards, heavy at times over the moors. Drier by dawn in the far southwest and mild. Minimum temperature 12 °C.

Wednesday:

Heavy, persistent rain clearing eastwards through the morning, though remaining mostly cloudy with rain and drizzle at times, mainly in the north. Breezy and staying mild overnight. Maximum temperature 19 °C.

Outlook for Thursday to Saturday:

Remaining changeable with showers or longer spells of rain at times, though brighter interludes are possible. Often breezy. A little milder and more humid by the end of the week.

Updated: 17:00 (UTC+1) on Tue 16 Sep 2025

UK long range weather forecast

It is likely to be fairly unsettled at first, with areas of rain or showers, most widespread across central, southern and eastern areas, perhaps accompanied by some strong winds. Into next week, a northwest-southeast split is most likely, with some further rain or showers in southern and eastern areas, closest to an area of low pressure, whilst the best chance of longer, drier spells will be towards the north and northwest, where some patchy fog and rural frost are possible. It will also turn colder, as a northerly flow becomes established for a time. Later in the period, more widely drier and settled conditions could develop as high pressure becomes slightly more influential, although probably still with a few coastal showers. Temperatures should gradually return closer to average.

Updated: 15:00 (UTC+1) on Tue 16 Sep 2025

By the beginning of October, confidence is very low in the weather regimes most likely to affect the UK. On balance, slow-moving weather patterns are most likely, with high pressure probably close to the UK at times, at least initially. This should offer some occasional periods of dry weather, but there is always the chance in this type of setup that areas of low pressure nearby could impact parts of the UK, leading to some wetter conditions at times. Temperatures will likely fluctuate either side of, but often close to, average.

Updated: 16:00 (UTC+1) on Tue 16 Sep 2025

Isle of Portland (Dorset) weather

Find a forecast

Forecast days

Today

Today

Wed 17 Sep

Wed 17 Sep

Thu 18 Sep

Thu 18 Sep

Fri 19 Sep

Fri 19 Sep

Sat 20 Sep

Sat 20 Sep

Sun 21 Sep

Sun 21 Sep

Mon 22 Sep

Mon 22 Sep

7 day forecast for Isle of Portland

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UK video forecast

South West England weather forecast

Headline:

This Evening and Tonight:

Wednesday:

Outlook for Thursday to Saturday:

UK long range weather forecast

Nearest forecasts

More from the Met Office

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Weather memories DIY activity

What is the difference between rain and showers?

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Isle of Portland (Dorset) weather

Find a forecast

Forecast days

Today

Today

Wed 17 Sep

Wed 17 Sep

Thu 18 Sep

Thu 18 Sep

Fri 19 Sep

Fri 19 Sep

Sat 20 Sep

Sat 20 Sep

Sun 21 Sep

Sun 21 Sep

Mon 22 Sep

Mon 22 Sep

7 day forecast for Isle of Portland

UK video forecast

South West England weather forecast

Tuesday 16 Sep - Saturday 20 Sep

Headline:

This Evening and Tonight:

Wednesday:

Outlook for Thursday to Saturday:

UK long range weather forecast

Sunday 21 Sep - Tuesday 30 Sep

Wednesday 1 Oct - Wednesday 15 Oct

Nearest forecasts

More from the Met Office

Causes of climate change

6 facts about the winter solstice

Weather memories DIY activity

What is the difference between rain and showers?

When is hay fever season in the UK?

4 tips for staying safe in extreme heat

Website feedback