Scilly St Marys (Isles of Scilly) weather

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Forecast days

Sun 13 Sep

Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 17° Celsius;

Sunrise: 06:58

Sunset: 19:43

Mist.

M UV

L Pollution

No pollen data.

Sun 13 Sep

Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 17 degrees Celsius;
Mon 14 Sep

Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 16° Celsius;

Sunrise: 07:00

Sunset: 19:41

Fog changing to overcast in the afternoon.

M UV

L Pollution

No pollen data.

Mon 14 Sep

Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 16 degrees Celsius;
Tue 15 Sep

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

Sunrise: 07:01

Sunset: 19:39

Sunny intervals changing to partly cloudy by nighttime.

M UV

L Pollution

No pollen data.

Tue 15 Sep

Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius;
Wed 16 Sep

Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 15° Celsius;

Sunrise: 07:03

Sunset: 19:36

Sunny intervals changing to cloudy by early evening.

M UV

L Pollution

No pollen data.

Wed 16 Sep

Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 15 degrees Celsius;
Thu 17 Sep

Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 15° Celsius;

Sunrise: 07:04

Sunset: 19:34

Light showers changing to sunny intervals by late morning.

M UV

L Pollution

No pollen data.

Thu 17 Sep

Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 15 degrees Celsius;
Fri 18 Sep

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

Sunrise: 07:06

Sunset: 19:32

Cloudy changing to mist in the afternoon.

M UV

No pollution data.

No pollen data.

Fri 18 Sep

Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 16 degrees Celsius;
Sat 19 Sep

Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 17° Celsius;

Sunrise: 07:07

Sunset: 19:30

Cloudy changing to sunny intervals by late morning.

M UV

No pollution data.

No pollen data.

Sat 19 Sep

Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 17 degrees Celsius;

Mist.

Sunrise: 06:58

Sunset: 19:43

M UV

L Pollution

No pollen data.

7 day forecast for Scilly St Marys

Today (13 September 2026)

Time	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	<5%	<5%	<5%	<5%	<5%	<5%
Temperature (°C)	18°	18°	17°	17°	17°	17°
Feels like temperature (°C)	16°	16°	16°	16°	16°	16°
Wind direction and speed (mph)	WSW 13	WSW 13	WSW 13	WSW 13	SW 11	SW 11
Wind gust (mph)	20	19	18	17	17	17
Visibility (description)	M	M	P	P	M	P
Humidity	94%	95%	95%	95%	95%	96%
UV	1	1	-	-	-	-

Monday (14 September 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	10%	<5%	<5%	<5%	<5%	<5%	10%	20%	10%	10%	<5%	<5%	<5%	<5%	<5%	<5%	10%	10%	10%	10%	<5%	<5%	<5%	10%
Temperature (°C)	17°	17°	17°	17°	17°	17°	17°	17°	17°	17°	18°	18°	18°	18°	18°	18°	18°	18°	18°	18°	17°	17°	17°	17°
Feels like temperature (°C)	16°	15°	15°	15°	15°	15°	16°	16°	16°	16°	16°	17°	17°	17°	17°	17°	17°	17°	16°	16°	16°	15°	15°	15°
Wind direction and speed (mph)	SW 11	SW 11	SW 11	SW 11	SW 11	SW 11	SW 11	SW 11	SW 13	SW 11	SW 11	SW 11	SW 11	SSW 11	SSW 11	SSW 11	SSW 11	SSW 11	SSW 13	SSW 13	SSW 13	SSW 13	SSW 13	SSW 14
Wind gust (mph)	17	17	17	17	17	17	17	17	18	17	17	17	17	17	17	17	17	18	19	19	20	20	21	23
Visibility (description)	P	VP	VP	VP	VP	VP	VP	VP	VP	VP	P	P	M	M	M	P	M	M	M	M	M	M	M	M
Humidity	96%	96%	96%	96%	96%	96%	96%	96%	96%	96%	96%	95%	95%	94%	93%	93%	93%	93%	93%	92%	92%	92%	92%	92%
UV	-	-	-	-	-	-	-	1	1	1	2	3	4	4	3	3	2	1	1	1	-	-	-	-

Tuesday (15 September 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%	50%	60%	60%	60%	40%	20%	10%	10%	<5%	<5%	10%	10%	20%	20%	30%	20%	20%	20%	10%	10%	20%	30%	40%
Temperature (°C)	17°	17°	17°	17°	17°	17°	17°	16°	17°	17°	17°	17°	17°	17°	17°	17°	17°	17°	17°	17°	16°	16°	16°	16°
Feels like temperature (°C)	15°	15°	15°	15°	15°	15°	14°	14°	14°	14°	13°	14°	14°	14°	14°	14°	14°	14°	13°	13°	12°	12°	12°	12°
Wind direction and speed (mph)	SW 14	SW 14	SW 14	WSW 14	WSW 14	WNW 14	WNW 15	WNW 15	WNW 16	WNW 16	WNW 18	WNW 17	WNW 17	WNW 17	WNW 18	WNW 18	WNW 18	WNW 19	WNW 19	NW 20	NW 21	NW 20	NW 20	NW 19
Wind gust (mph)	23	23	24	25	26	27	28	28	32	31	31	31	30	30	31	31	32	32	33	33	33	33	33	33
Visibility (description)	M	M	P	P	P	M	M	M	M	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G
Humidity	92%	93%	95%	95%	95%	91%	85%	83%	80%	76%	70%	69%	69%	70%	73%	75%	76%	75%	75%	74%	74%	74%	75%	74%
UV	-	-	-	-	-	-	-	1	1	2	3	4	5	5	4	3	2	1	1	1	-	-	-	-

Wednesday (16 September 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	50%	40%	50%	40%	40%	50%	50%	50%	40%	40%	30%	30%	30%	20%	20%	10%	10%	10%	10%	20%	40%	50%	50%	40%
Temperature (°C)	15°	15°	15°	15°	15°	15°	15°	15°	16°	16°	16°	16°	16°	16°	16°	16°	16°	16°	16°	16°	15°	15°	15°	15°
Feels like temperature (°C)	12°	11°	12°	12°	12°	12°	12°	13°	13°	13°	13°	14°	13°	14°	14°	14°	13°	14°	14°	13°	13°	13°	13°	13°
Wind direction and speed (mph)	NW 19	NW 21	NW 20	NW 18	NW 18	NNW 17	NW 16	NW 15	NW 15	NW 14	NW 13	NW 11	NW 13	WNW 11	WNW 11	WNW 13	WNW 13	WNW 14	WNW 14	W 14	W 14	W 15	W 15	W 16
Wind gust (mph)	33	32	32	31	30	30	28	28	27	25	24	23	22	22	22	22	23	22	23	25	26	27	28	29
Visibility (description)	G	G	G	G	G	G	G	G	G	G	G	G	VG	VG	VG	G	G	G	G	G	G	G	G	M
Humidity	74%	73%	75%	74%	73%	71%	72%	74%	73%	71%	71%	69%	72%	72%	71%	69%	69%	68%	70%	71%	74%	77%	78%	81%
UV	-	-	-	-	-	-	-	1	1	1	2	3	4	4	3	3	2	1	1	1	-	-	-	-

Thursday (17 September 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	40%	50%	70%	70%	80%	70%	60%	50%	30%	30%	20%	10%	10%	20%	20%	20%	20%	20%	20%	30%	30%	30%	20%	20%
Temperature (°C)	15°	15°	15°	15°	15°	16°	16°	16°	16°	16°	17°	17°	17°	17°	17°	17°	17°	17°	17°	16°	15°	15°	15°	15°
Feels like temperature (°C)	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°	13°	13°	13°	13°	13°	13°	13°	12°	12°	12°	12°	11°	12°	12°
Wind direction and speed (mph)	WSW 17	WSW 18	WSW 20	WSW 20	WSW 21	WSW 20	W 20	W 20	W 20	W 20	WNW 20	WNW 19	WNW 20	WNW 20	WNW 20	WNW 20	WNW 21	WNW 22	WNW 22	WNW 21	WNW 21	WNW 22	WNW 21	WNW 20
Wind gust (mph)	30	31	32	33	33	34	33	34	34	34	34	33	35	34	34	34	36	36	36	35	34	35	34	34
Visibility (description)	M	M	M	P	P	P	P	M	M	M	M	G	G	G	G	G	G	G	G	G	G	G	G	G
Humidity	79%	82%	83%	86%	88%	90%	87%	88%	80%	77%	73%	73%	69%	70%	72%	69%	73%	72%	71%	71%	74%	74%	73%	73%
UV	-	-	-	-	-	-	-	1	1	1	2	3	4	4	4	3	2	1	1	1	-	-	-	-

Friday (18 September 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	30%	10%	10%	10%	10%	10%	20%	30%	20%
Temperature (°C)	15°	15°	15°	15°	16°	17°	17°	17°	17°
Feels like temperature (°C)	12°	12°	12°	12°	13°	13°	14°	14°	14°
Wind direction and speed (mph)	WNW 19	WNW 19	WNW 19	WNW 18	W 17	WSW 17	WSW 18	WSW 18	WSW 18
Wind gust (mph)	34	34	32	30	28	29	29	28	29
Visibility (description)	G	G	G	M	G	M	M	M	M
Humidity	73%	73%	74%	74%	74%	75%	77%	88%	89%
UV	-	-	-	1	2	4	2	1	-

Saturday (19 September 2026)

Time	01:00	04:00	07:00	10:00	13:00	16:00	19:00	22:00
Weather symbols
Chance of precipitation	20%	30%	30%	20%	20%	20%	10%	10%
Temperature (°C)	17°	17°	17°	18°	18°	18°	17°	17°
Feels like temperature (°C)	14°	14°	14°	15°	15°	15°	15°	15°
Wind direction and speed (mph)	WSW 18	WSW 18	WSW 17	WSW 15	WSW 16	WSW 15	WSW 14	W 13
Wind gust (mph)	29	27	27	27	27	26	24	24
Visibility (description)	M	M	M	M	M	M	M	M
Humidity	90%	88%	89%	85%	86%	85%	84%	85%
UV	-	-	1	2	4	2	1	-

UK video forecast

Scilly St Marys weather map

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in force for England

Flood warnings may be in force for England

Environment Agency

South West England weather forecast

Headline:

Changeable over the next few days.

This Evening and Tonight:

Some brighter spells to the east initially, but cloud soon returning and staying mostly cloudy overnight with a few spots of rain possible at times. Low cloud and hill fog likely over the moors. Another warm and fairly humid night. Minimum temperature 17 °C.

Monday:

Largely cloudy skies on Monday with a few outbreaks of rain or drizzle possible at times. Some warm and humid brighter spells also likely in the afternoon. Maximum temperature 25 °C.

Outlook for Tuesday to Thursday:

Changeable over the next few days and feeling fresher. Sunshine and showers will spread across the region and it will turn increasingly breezy.

Updated: 16:00 (UTC+1) on Sun 13 Sep 2026

UK long range weather forecast

Remaining changeable, with occasional rain or showers arriving from the North Atlantic, most frequent across northern and western parts of the UK, where some strong winds will also be possible at times. However, there will also be some reasonably dry and more settled periods interspersed, especially across southern areas, with a chance these may extend to more of the UK later in the period. Temperatures for the period as a whole will probably be close to average overall, but there is scope for some rather warm days at times, along with occasional relatively cool nights giving the occasional grass frost.

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

Most likely remaining changeable, with further spells of rain and showers arriving from the North Atlantic. Strong winds possible too at times, these most frequent across the north and west. Some short-lived settled spells are also possible, these most likely in the south. Temperatures for the period as a whole will probably be close to average overall.

Updated: 14:00 (UTC+1) on Sun 13 Sep 2026

Scilly St Marys (Isles of Scilly) weather

Find a forecast

Forecast days

Sun 13 Sep

Sun 13 Sep

Mon 14 Sep

Mon 14 Sep

Tue 15 Sep

Tue 15 Sep

Wed 16 Sep

Wed 16 Sep

Thu 17 Sep

Thu 17 Sep

Fri 18 Sep

Fri 18 Sep

Sat 19 Sep

Sat 19 Sep

7 day forecast for Scilly St Marys

Tooltip header

UK video forecast

South West England weather forecast

Headline:

This Evening and Tonight:

Monday:

Outlook for Tuesday to Thursday:

UK long range weather forecast

Nearest forecasts

Scilly St Marys (Isles of Scilly) weather

Find a forecast

Forecast days

Sun 13 Sep

Sun 13 Sep

Mon 14 Sep

Mon 14 Sep

Tue 15 Sep

Tue 15 Sep

Wed 16 Sep

Wed 16 Sep

Thu 17 Sep

Thu 17 Sep

Fri 18 Sep

Fri 18 Sep

Sat 19 Sep

Sat 19 Sep

7 day forecast for Scilly St Marys

UK video forecast

South West England weather forecast

Sunday 13 Sep - Thursday 17 Sep

Headline:

This Evening and Tonight:

Monday:

Outlook for Tuesday to Thursday:

UK long range weather forecast

Friday 18 Sep - Sunday 27 Sep

Monday 28 Sep - Monday 12 Oct

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