Weather in Southern Harbour

14-day forecast · updated today, Wednesday, October 28, at 11:45 pm (GMT-2:30)

Now · partly cloudy 39 °F

Feels like: 29 °F
Low / high: 35 / 41 °F
Rain: 0%
Wind: 12 mph WSW

→ 30.04 inHg · steady

Today in Southern Harbour: partly cloudy, 35 °F to 41 °F, with a 0% chance of rain and a gentle breeze from the west-southwest (12 mph). Tomorrow, overcast, 39 °F to 48 °F and a 0% chance of rain. The warmest day of the week is Friday 30, at 49 °F. Next likely rain: Saturday 31 (35%).

Temperatures for the next 14 days

41° 35°
Today
48° 39°
Thu 29
49° 45°
Fri 30
47° 36°
Sat 31
40° 34°
Sun 1
47° 39°
Mon 2
47° 32°
Tue 3
42° 32°
Wed 4
49° 42°
Thu 5
43° 38°
Fri 6
48° 42°
Sat 7
48° 46°
Sun 8
47° 39°
Mon 9
38° 35°
Tue 10

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 28	Partly cloudy	35 / 41 °F	0%	19 mph WNW	2.1 ft	10:26 am · 10:40 pm	ECMWF
Thu 29	Overcast	39 / 48 °F	0%	15 mph WSW	2.2 ft	11:15 am · 11:33 pm	ECMWF
Fri 30	Light drizzle	45 / 49 °F	29% · 0.04 in	20 mph SW	3.4 ft	12:08 pm	ECMWF
Sat 31	Drizzle	36 / 47 °F	35% · 0.15 in	17 mph NNE	1.8 ft	12:35 am · 1:06 pm	ECMWF
Sun 1	Overcast	34 / 40 °F	10%	19 mph WNW	2.1 ft	1:47 am · 1:14 pm	ECMWF
Mon 2	Light drizzle	39 / 47 °F	22% · 0.02 in	20 mph SW	3.4 ft	2:01 am · 2:33 pm	ECMWF
Tue 3	Light drizzle	32 / 47 °F	10% · 0.02 in	16 mph W	2.2 ft	3:08 am · 3:49 pm	ECMWF
Wed 4	Light drizzle	32 / 42 °F	29% · 0.04 in	18 mph S	2.1 ft	4:09 am · 4:54 pm	ECMWF
Thu 5	Heavy drizzle	42 / 49 °F	31% · 0.31 in	23 mph SW	3.1 ft	5:06 am · 5:48 pm	ECMWF
Fri 6	Overcast	38 / 43 °F	27%	7 mph S	0.8 ft	5:58 am · 6:35 pm	ECMWF
Sat 7	Drizzle	42 / 48 °F	35% · 0.36 in	7 mph ESE	—	6:45 am · 7:17 pm	ECMWF
Sun 8	Drizzle	46 / 48 °F	34% · 0.31 in	14 mph SSE	—	7:28 am · 7:53 pm	ECMWF
Mon 9	Light drizzle	39 / 47 °F	27% · 0.03 in	19 mph WNW	—	8:07 am · 8:26 pm	ECMWF
Tue 10	Overcast	35 / 38 °F	25%	14 mph NW	—	8:43 am · 8:55 pm	ECMWF

Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.

Today, every 3 hours

Time	12:00 am	3:00 am	6:00 am	9:00 am	12:00 pm	3:00 pm	6:00 pm	9:00 pm
Sky	Clear	Clear	Clear	Clear sky	Partly cloudy	Partly cloudy	Mainly clear	Clear
Temperature	36°	35°	35°	35°	37°	40°	40°	39°
Chance of rain	0%	0%	0%	0%	0%	0%	0%	0%
Rain	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in
Wind (mph)	11 WNW	12 WNW	13 WNW	17 WNW	18 NW	19 WNW	13 WNW	11 W
Humidity	67%	75%	76%	65%	53%	50%	58%	69%
UV	0	0	0	0	1	1	0	0
Model	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF

Do the models agree?

Low confidence

They don't agree on rain on Friday 30: it may change, so check again closer to the day.

What 4 forecast models say for the next few days. The closer they are, the more reliable the forecast.

HighRainWind

Do the models agree? · High
High (°F)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	48°	49°	47°	40°	47°	47°
AIFS	47°	49°	48°	40°	47°	47°
GFS	48°	50°	48°	44°	49°	47°
ICON	49°	49°	51°	41°	47°	48°
Confidence	high	high	high	high	high	high

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	0	0.04 in	0.15 in	0	0.02 in	0.02 in
AIFS	0	0.22 in	0.42 in	0	0	0
GFS	0	0.07 in	0.18 in	0	0.02 in	0.11 in
ICON	0	0.02 in	0.06 in	0.02 in	0.02 in	0
Confidence	high	low	medium	high	high	medium

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	1523	2028	1726	1928	2034	1631
AIFS	17	19	19	19	21	13
GFS	1934	2037	1223	1426	2038	2032
ICON	1836	2039	1937	2039	2344	2551
Confidence	high	high	medium	high	high	medium

Chance of rain from the ensemble models

Model	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF (51 scenarios)	0%	29%	35%	10%	22%	10%
GFS (GEFS, 31 scenarios)	0%	75%	81%	21%	23%	37%

Each model's day runs midnight to midnight local time; models that reach fewer days are left blank. Rain: daily total. Wind: the day's highest average wind and, in small type, the strongest gust. Highlighted: values that stand out from the rest. The chance of rain comes from many runs of the same model with slightly different starting data.

Outlook

How the coming weeks and months compare with what is normal for the time of year. It is a trend, not a day-by-day forecast.

Next few weeks, compared with normal: normal temperatures, normal rain and a cooler sea.

Next 6 weeks

When	TemperatureTemp.	Rain	Sea	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	A bit below −2.3 °F	A bit below −41%	Below −3.2 °F	—
Nov 9 – Nov 15Nov 9–Nov 15	Normal −0.2 °F	Normal	Below −2.0 °F	43° / 39°
Nov 16 – Nov 22Nov 16–Nov 22	Normal −0.5 °F	Normal	A bit below −1.3 °F	40° / 37°
Nov 23 – Nov 29Nov 23–Nov 29	Normal +0.4 °F	Normal	A bit below −0.7 °F	40° / 37°
Nov 30 – Dec 6Nov 30–Dec 6	Normal +0.2 °F	Normal	Normal −0.4 °F	38° / 35°

Coming months

When	TemperatureTemp.	Rain	Sea
November	A bit above +1.6 °F	Normal	—
December	Above +3.6 °F	Normal	—
January	Above +4.9 °F	Normal	—
February	Above +4.7 °F	Normal	—
March	Above +3.4 °F	Normal	—

Weeks: ECMWF 46-day (average of its scenarios), against the normal of the last 20 years for those dates. Months: ECMWF SEAS5. Rain: total against normal. The further ahead, the closer it gets to normal and the less detail it can give.

Southern Harbour climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Southern Harbour is in August: highs of 69 °F, about 12 rainy days a month and 6 hours of sunshine a day.

Hurricane season: in September. In the last 30 years (1996–2025), 5 tropical cyclones passed within 93 mi of Southern Harbour, about 2 every 10 years; 2 of them with hurricane-force winds (74 mph or more). The most recent: Larry, in September 2021.

32° 18°

JanJ
32° 17°

FebF
35° 21°

MarM
42° 29°

AprA
50° 35°

MayM
58° 42°

JunJ
66° 51°

JulJ
69° 55°

AugA
63° 48°

SepS
53° 41°

OctO
45° 33°

NovN
37° 25°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	32°	18°	5.23 in	13	2.2	35°	3.1 ft	–
FebruaryFeb	32°	17°	4.43 in	11	3.3	33°	3.1 ft	–
MarchMar	35°	21°	3.97 in	12	4.8	33°	2.7 ft	–
AprilApr	42°	29°	3.98 in	12	5.4	34°	2.4 ft	–
MayMay	50°	35°	3.82 in	11	5.8	38°	1.6 ft	–
JuneJun	58°	42°	5.04 in	12	6.1	44°	1.7 ft	–
JulyJul	66°	51°	4.53 in	12	6.1	52°	1.7 ft	–
AugustAug	69°	55°	3.93 in	12	5.8	58°	1.7 ft	1
SeptemberSep	63°	48°	5.09 in	11	5.2	56°	2.1 ft	4
OctoberOct	53°	41°	5.25 in	13	3.0	50°	2.4 ft	–
NovemberNov	45°	33°	5.52 in	13	1.8	45°	3.0 ft	–
DecemberDec	37°	25°	5.06 in	15	1.4	39°	2.8 ft	–

Month	Water	Waves	Cyclones
Jan	35°	3.1 ft	–
Feb	33°	3.1 ft	–
Mar	33°	2.7 ft	–
Apr	34°	2.4 ft	–
May	38°	1.6 ft	–
Jun	44°	1.7 ft	–
Jul	52°	1.7 ft	–
Aug	58°	1.7 ft	1
Sep	56°	2.1 ft	4
Oct	50°	2.4 ft	–
Nov	45°	3.0 ft	–
Dec	39°	2.8 ft	–

Days: rainy days in the month. Sun: hours a day.

A normal year brings 55.85 in of rain on about 147 days and about 1,550 hours of sunshine.

Cyclones: how many tropical cyclones (tropical storms, hurricanes and typhoons) passed within 93 mi in each month from 1996 to 2025, according to IBTrACS (NOAA).

1991–2020 averages. Highs, lows and rainfall: TerraClimate; rainy days (0.04 in or more): NASA POWER (MERRA-2); sunshine hours: estimated from solar radiation; water: NOAA OISST; waves (average height): ERA5, 2011–2020. Normals are not a forecast: any given year can turn out very different. Sources and licenses

Temperature

Now39 °Ffeels like 29 °F

Tomorrow39 / 48 °F

It's 39 °F now (feels like 29 °F). Today, 35 °F to 41 °F; tomorrow, 39 °F to 48 °F.

Chance of rain

Today 0%
Thu 29 0%
Fri 30 29% 0.04 in
Sat 31 35% 0.15 in
Sun 1 10%
Mon 2 22% 0.02 in
Tue 3 10% 0.02 in

Today the chance of rain reaches 0%. The next day with likely rain is Saturday 31: 35% and 0.15 in.

Recent rain: last 24 hours, 0.00 in; last 3 days, 0.20 in; last 7 days, 0.85 in.

Humidity and dew point

Humidity71%

Dew point30 °F

Humidity is 71% now and the dew point is 30 °F.

The dew point is the temperature at which the air becomes saturated: the higher it is, the heavier the air feels.

Visibility and fog

Now15 migood

Clouds74%

Visibility is good now (15 mi). No fog expected today.

The model gives visibility up to about 15 mi: beyond that, the horizon is clear.

UV index

Now0

Today's peak1low

Thu 29: 2 · Fri 30: 1 · Sat 31: 1

Index	Level	What to do
0–2	low	No special protection needed.
3–5	moderate	Hat, sunglasses and sunscreen around midday.
6–7	high	Sunscreen, hat and shade between 12 and 4 pm.
8–10	very high	Avoid the midday sun; reflection off the water adds to it.
11+	extreme	Avoid the sun between 11 am and 5 pm; protect yourself even if it is cloudy.

Reflection off water and sand adds radiation: protect yourself more on a boat or at the beach.

Barometric pressure

↗ Rising Anglers say fish bite less for a while
→ Steady · now Anglers expect normal activity
↘ Falling Anglers say fish feed more before the change

29.8030.00 29.73

Steady now (−0.01 inHg in 3 hours). Over the next 48 hours: −0.27 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityFair · 27

Saharan dustNo

Previous days

The weather over the last 29 days, as the models analyzed it. Tap a day to see it hour by hour.

Day	Sky	Low / high	Rain	Max wind
Tue 27	Drizzle	36 / 47 °F	0.17 in	18 mph WNW
Mon 26	Drizzle	46 / 53 °F	0.03 in	16 mph SW
Sun 25	Overcast	37 / 49 °F	0	11 mph W
Sat 24	Light drizzle	37 / 43 °F	0.01 in	27 mph NE
Fri 23	Light rain	40 / 44 °F	0.49 in	33 mph NE
Thu 22	Light rain	41 / 46 °F	0.15 in	11 mph SSE
Wed 21	Overcast	40 / 47 °F	0	12 mph NE

Show all 29 days

Day	Sky	Low / high	Rain	Max wind
Tue 20	Overcast	46 / 51 °F	0	19 mph SW
Mon 19	Overcast	34 / 45 °F	0	22 mph SW
Sun 18	Light drizzle	39 / 45 °F	0.05 in	19 mph W
Sat 17	Light rain	45 / 54 °F	0.46 in	30 mph SW
Fri 16	Drizzle	41 / 47 °F	0.06 in	23 mph WNW
Thu 15	Rain	41 / 54 °F	1.04 in	27 mph S
Wed 14	Light drizzle	36 / 47 °F	0.01 in	15 mph SW
Tue 13	Light drizzle	35 / 42 °F	0.01 in	16 mph NNW
Mon 12	Light snow	38 / 56 °F	0.26 in	19 mph WSW
Sun 11	Light drizzle	43 / 49 °F	0.00 in	18 mph WNW
Sat 10	Light drizzle	45 / 53 °F	0.08 in	16 mph WNW
Fri 9	Heavy drizzle	52 / 57 °F	0.16 in	22 mph SSW
Thu 8	Light drizzle	47 / 55 °F	0.00 in	19 mph SSW
Wed 7	Light drizzle	50 / 54 °F	0.02 in	28 mph WSW
Tue 6	Rain	53 / 58 °F	1.28 in	25 mph SW
Mon 5	Rain	48 / 55 °F	0.44 in	16 mph SE
Sun 4	Mainly clear	47 / 57 °F	0	10 mph W
Sat 3	Drizzle	53 / 62 °F	0.09 in	17 mph SW
Fri 2	Light drizzle	55 / 58 °F	0.01 in	20 mph SSW
Thu 1	Overcast	53 / 56 °F	0	15 mph SSW
Wed 30	Overcast	50 / 58 °F	0	8 mph ENE
Tue 29	Light drizzle	50 / 54 °F	0.04 in	12 mph SW

These are the models at the start of each day (ECMWF and GFS; waves from Météo-France), not readings from a weather station: there can be differences at specific spots.

Questions about the weather in Southern HarbourQuestions

What's the weather like today in Southern Harbour?

Partly cloudy, from 35 °F to 41 °F, with a gentle breeze from the west-southwest (12 mph) and a 0% chance of rain.

Will it rain tomorrow in Southern Harbour?

On Thursday 29 the chance of rain is 0% (0.00 in): overcast.

How warm will it be this week?

Between a low of 32 °F and a high of 49 °F; the warmest day, Friday 30.

What's the UV index today?

It reaches 1 (low). No special protection needed.

Is the pressure rising or falling?

It's 30.04 inHg and steady: +0.19 inHg over the last 24 hours.

When is the best time to visit Southern Harbour?

The best time to visit Southern Harbour is in August: highs of 69 °F, about 12 rainy days a month and 6 hours of sunshine a day.

What is the weather like in Southern Harbour in October?

In October, Southern Harbour normally sees highs of 53 °F and lows of 41 °F, with about 13 rainy days (5.25 in for the month) and 3 hours of sunshine a day. The sea is around 50 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Southern Harbour?

The warmest is August, with average highs of 69 °F, and the coldest February, with lows of 17 °F. The wettest is November (5.52 in) and the driest, May.

When is hurricane season in Southern Harbour?

Hurricane season: in September. In the last 30 years (1996–2025), 5 tropical cyclones passed within 93 mi of Southern Harbour, about 2 every 10 years; 2 of them with hurricane-force winds (74 mph or more). The most recent: Larry, in September 2021.

More about Southern Harbour today

Weather near Southern Harbour

Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.

Learn more

Weather: Open-Meteo, CC BY 4.0, with the best model for each spot and lead time (NOAA HRRR and NBM in the U.S., Météo-France AROME, DWD ICON-EU, ECMWF IFS and NOAA GFS); ECMWF grid point 2.8 mi away. The comparison also uses ICON (DWD), AIFS (ECMWF) and ARPEGE (Météo-France). Outlook: ECMWF 46-day and SEAS5. Chance of rain from ensemble models (ECMWF, GEFS and NBM). UV, air quality and pollen: CAMS (Copernicus).

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 11:45 pm (local time).

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