Tristan Da Cunha (St Helena - Ascension and Tristan Da Cunha) weather

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Forecast days

Today

Maximum daytime temperature: 13° Celsius; Minimum nighttime temperature: 12° Celsius;

Sunrise: 06:45

Sunset: 18:42

Sunny intervals changing to partly cloudy by nighttime.

H UV

No pollution data.

No pollen data.

Today

Maximum daytime temperature: 13° Celsius; Minimum nighttime temperature: 12° Celsius;
Fri 19 Sep

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

Sunrise: 06:43

Sunset: 18:43

Cloudy changing to heavy rain by lunchtime.

M UV

No pollution data.

No pollen data.

Fri 19 Sep

Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 11° Celsius;
Sat 20 Sep

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

Sunrise: 06:42

Sunset: 18:44

Overcast.

H UV

No pollution data.

No pollen data.

Sat 20 Sep

Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 14° Celsius;
Sun 21 Sep

Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 12° Celsius;

Sunrise: 06:40

Sunset: 18:45

Cloudy changing to drizzle by late morning.

M UV

No pollution data.

No pollen data.

Sun 21 Sep

Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 12° Celsius;
Mon 22 Sep

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

Sunrise: 06:39

Sunset: 18:46

Overcast changing to sunny intervals by late morning.

H UV

No pollution data.

No pollen data.

Mon 22 Sep

Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 14° Celsius;
Tue 23 Sep

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

Sunrise: 06:37

Sunset: 18:47

Overcast changing to sunny intervals in the afternoon.

H UV

No pollution data.

No pollen data.

Tue 23 Sep

Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 15° Celsius;
Wed 24 Sep

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

Sunrise: 06:36

Sunset: 18:47

Sunny changing to partly cloudy by nighttime.

H UV

No pollution data.

No pollen data.

Wed 24 Sep

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

Sunny intervals changing to partly cloudy by nighttime.

Sunrise: 06:45

Sunset: 18:42

H UV

No pollution data.

No pollen data.

7 day forecast for Tristan Da Cunha

Today (18 September 2025)

Time	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%	30%	20%	10%	10%	10%	10%	<5%	10%	10%	10%	10%	10%	10%	<5%	10%	<5%	<5%	<5%	<5%	<5%
Temperature (°C)	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°
Feels like temperature (°C)	10°	9°	10°	10°	10°	10°	10°	10°	11°	11°	11°	11°	11°	11°	11°	11°	11°	10°	10°	10°	10°
Wind direction and speed (mph)	S 11	S 10	S 10	S 10	S 10	SSE 10	SSE 8	SSE 7	SE 6	SSE 6	SSE 7	S 7	SW 7	SW 7	WSW 8	WSW 8	WSW 9	W 10	W 11	W 12	W 13
Wind gust (mph)	15	16	15	15	15	14	13	12	11	11	12	12	12	13	13	13	15	16	17	19	21
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG	VG
Humidity	74%	74%	74%	72%	72%	69%	69%	67%	67%	66%	66%	66%	66%	66%	66%	66%	65%	65%	65%	64%	65%
UV	-	-	-	1	1	1	3	4	6	7	6	5	3	2	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%	10%	40%	80%	≥95%	60%	20%	<5%	<5%	<5%	10%	10%	20%	10%	<5%
Temperature (°C)	12°	13°	13°	13°	13°	13°	13°	13°	13°	13°	14°	14°	14°	13°	12°	12°	12°	12°	12°	12°	12°	11°	11°	11°
Feels like temperature (°C)	10°	10°	10°	10°	9°	9°	9°	9°	9°	9°	9°	9°	9°	8°	7°	7°	7°	7°	7°	7°	7°	7°	7°	7°
Wind direction and speed (mph)	W 14	W 14	W 15	WNW 17	WNW 19	WNW 21	WNW 22	WNW 23	WNW 24	NW 25	NW 27	NW 28	NW 30	WNW 32	W 32	WSW 30	SW 30	SW 30	SW 29	SW 29	SW 27	SSW 27	SSW 26	SSW 24
Wind gust (mph)	21	21	23	26	28	30	32	33	35	37	39	41	45	48	46	44	43	42	42	40	39	38	36	35
Visibility (description)	VG	VG	G	VG	VG	G	G	VG	VG	VG	VG	VG	G	M	M	VG	VG	VG	VG	VG	G	VG	VG	VG
Humidity	63%	63%	61%	62%	62%	63%	65%	67%	70%	72%	73%	74%	77%	83%	82%	72%	67%	64%	61%	61%	60%	62%	58%	58%
UV	-	-	-	-	-	-	1	1	1	2	3	2	3	1	2	3	2	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	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%
Temperature (°C)	11°	11°	11°	11°	11°	11°	11°	11°	12°	12°	12°	12°	12°	12°	13°	13°	13°	13°	13°	13°	14°	14°	14°	14°
Feels like temperature (°C)	7°	7°	7°	7°	7°	8°	8°	8°	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°
Wind direction and speed (mph)	SSW 23	SSW 23	SSW 22	SW 22	SW 21	SW 20	SW 18	SW 17	SW 15	SW 15	WSW 14	WSW 14	W 14	W 15	WNW 16	WNW 18	WNW 18	NW 20	NW 22	NW 24	NW 26	NW 27	NW 28	NW 30
Wind gust (mph)	33	32	31	31	30	28	26	25	23	22	22	22	22	23	25	26	28	30	33	36	37	39	41	43
Visibility (description)	G	G	G	G	G	G	G	G	G	G	G	G	G	G	VG	G	G	G	G	G	VG	VG	VG	VG
Humidity	57%	56%	56%	56%	56%	55%	55%	55%	55%	56%	55%	56%	56%	56%	56%	57%	57%	59%	61%	64%	64%	65%	67%	69%
UV	-	-	-	-	-	-	1	1	1	3	4	5	6	6	4	3	2	1	1	-	-	-	-	-

Sunday (21 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%	10%	10%	20%	20%	40%	50%	50%	60%	70%	70%	70%	60%	60%	50%	50%	30%	40%	30%	30%	30%
Temperature (°C)	14°	14°	14°	14°	14°	14°	15°	15°	15°	15°	15°	15°	15°	15°	14°	14°	14°	14°	14°	14°	13°	13°	13°	13°
Feels like temperature (°C)	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°	10°	10°	10°	10°	10°	10°	10°	10°
Wind direction and speed (mph)	NW 31	NW 31	NW 32	NW 32	NW 33	NW 33	NW 33	NW 33	NW 33	NW 33	NW 33	WNW 33	WNW 32	WNW 31	WNW 30	W 29	WSW 27	WSW 24	SW 23	SW 21	SW 19	SSW 18	SSW 15	S 15
Wind gust (mph)	44	44	45	46	46	46	46	46	46	46	46	46	44	42	41	40	36	34	31	28	27	24	22	23
Visibility (description)	VG	VG	VG	VG	VG	VG	VG	VG	G	M	M	M	M	M	M	M	M	M	M	M	G	G	G	G
Humidity	71%	74%	75%	76%	76%	78%	81%	84%	85%	86%	88%	89%	91%	91%	91%	91%	92%	91%	90%	90%	86%	83%	82%	78%
UV	-	-	-	-	-	-	1	1	1	2	3	3	4	4	3	2	1	1	1	-	-	-	-	-

Monday (22 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%	20%	20%	10%	10%	10%	10%	10%	<5%	10%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%
Temperature (°C)	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°	13°	13°	13°	13°	13°	13°	13°	13°	13°	14°	14°	14°
Feels like temperature (°C)	10°	10°	10°	10°	10°	10°	10°	10°	10°	10°	10°	10°	11°	10°	11°	11°	11°	11°	11°	11°	11°	11°	11°	11°
Wind direction and speed (mph)	S 15	S 14	S 13	S 12	S 12	SSE 11	SSE 11	SE 10	SE 11	SE 10	ESE 10	E 10	ENE 10	ENE 11	ENE 11	ENE 12	NE 11	NE 12	NE 12	NE 13	NNE 13	NNE 14	NNE 15	NNE 16
Wind gust (mph)	21	20	18	18	18	17	17	15	15	15	16	16	16	16	16	16	17	17	18	19	19	21	21	22
Visibility (description)	G	G	G	G	G	G	G	G	G	G	VG	VG	VG	VG	VG	VG	VG	G	G	G	G	G	G	G
Humidity	77%	75%	75%	73%	71%	70%	70%	69%	69%	69%	69%	69%	69%	69%	69%	70%	70%	70%	72%	74%	74%	77%	79%	79%
UV	-	-	-	-	-	-	1	1	1	2	4	6	6	6	5	3	2	1	1	-	-	-	-	-

Tuesday (23 September 2025)

Time	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00
Weather symbols
Chance of precipitation	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%
Temperature (°C)	14°	14°	14°	14°	15°	15°	15°	15°
Feels like temperature (°C)	11°	11°	11°	11°	11°	12°	12°	12°
Wind direction and speed (mph)	N 16	N 17	NNW 18	NNW 17	NNW 18	NNW 18	NNW 17	NNW 18
Wind gust (mph)	23	24	24	25	25	23	24	25
Visibility (description)	G	G	G	G	G	G	G	G
Humidity	83%	90%	94%	92%	94%	92%	93%	93%
UV	-	-	1	2	6	3	1	-

Wednesday (24 September 2025)

Time	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00
Weather symbols
Chance of precipitation	<5%	<5%	<5%	<5%	<5%	<5%	<5%	<5%
Temperature (°C)	15°	15°	15°	15°	15°	15°	15°	15°
Feels like temperature (°C)	12°	12°	12°	12°	12°	12°	13°	12°
Wind direction and speed (mph)	NNW 19	NNW 19	NNW 19	NNW 19	NNW 18	NNW 18	NNW 17	NNW 17
Wind gust (mph)	26	26	26	25	25	23	23	25
Visibility (description)	G	G	G	G	G	G	G	G
Humidity	93%	94%	94%	93%	93%	93%	93%	94%
UV	-	-	1	3	6	3	1	-

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Forecast for 03:00 (UTC), Thu

Updated 01:23 (UTC+1) on Thu 18 Sep 2025

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Tristan Da Cunha (St Helena - Ascension and Tristan Da Cunha) weather

Find a forecast

Forecast days

Today

Today

Fri 19 Sep

Fri 19 Sep

Sat 20 Sep

Sat 20 Sep

Sun 21 Sep

Sun 21 Sep

Mon 22 Sep

Mon 22 Sep

Tue 23 Sep

Tue 23 Sep

Wed 24 Sep

Wed 24 Sep

7 day forecast for Tristan Da Cunha

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