Weather in Swansea

14-day forecast · updated today, Thursday, October 29, at 5:25 am (EDT)

Now · clear 40 °F

Feels like: 36 °F
Low / high: 39 / 64 °F
Rain: 0%
Wind: 2 mph SSE

→ 30.30 inHg · steady

Today in Swansea: clear sky, 39 °F to 64 °F, with a 0% chance of rain and a light air from the south-southeast (2 mph). Tomorrow, partly cloudy, 48 °F to 69 °F and a 4% chance of rain. The warmest day of the week is Friday 30, at 69 °F. Next likely rain: Thursday 5 (32%).

Temperatures for the next 14 days

64° 39°
Today
69° 48°
Fri 30
57° 38°
Sat 31
60° 35°
Sun 1
65° 42°
Mon 2
65° 47°
Tue 3
67° 52°
Wed 4
67° 53°
Thu 5
65° 52°
Fri 6
60° 46°
Sat 7
58° 42°
Sun 8
59° 42°
Mon 9
59° 49°
Tue 10
57° 50°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Clear sky	39 / 64 °F	0%	13 mph SW	1.0 ft	11:06 am · 11:34 pm	HRRR
Fri 30	Partly cloudy	48 / 69 °F	4%	12 mph W	1.1 ft	12:03 pm	NBM
Sat 31	Clear sky	38 / 57 °F	0%	9 mph NNW	0.7 ft	12:32 am · 1:02 pm	NBM
Sun 1	Clear sky	35 / 60 °F	0%	5 mph WSW	0.5 ft	1:31 am · 1:02 pm	NBM
Mon 2	Partly cloudy	42 / 65 °F	2%	8 mph SW	0.5 ft	1:30 am · 2:00 pm	NBM
Tue 3	Overcast	47 / 65 °F	8%	7 mph NE	0.7 ft	2:29 am · 2:58 pm	NBM
Wed 4	Overcast	52 / 67 °F	12%	9 mph SE	1.2 ft	3:28 am · 3:57 pm	NBM
Thu 5	Partly cloudy	53 / 67 °F	32% · 0.17 in	11 mph SSE	1.0 ft	4:29 am · 4:57 pm	NBM
Fri 6	Drizzle	52 / 65 °F	37% · 1.35 in	10 mph SSE	0.9 ft	5:27 am · 5:51 pm	NBM
Sat 7	Rain	46 / 60 °F	27% · 0.06 in	10 mph NW	—	6:16 am · 6:38 pm	NBM
Sun 8	Mainly clear	42 / 58 °F	15% · 0.15 in	9 mph NW	—	7:00 am · 7:21 pm	NBM
Mon 9	Overcast	42 / 59 °F	18% · 0.02 in	11 mph W	—	7:40 am · 8:02 pm	NBM + ECMWF
Tue 10	Light drizzle	49 / 59 °F	15% · 0.06 in	7 mph S	—	8:19 am · 8:44 pm	ECMWF
Wed 11	Light drizzle	50 / 57 °F	16% · 0.06 in	8 mph N	—	8:58 am · 9:26 pm	ECMWF

Each hour comes from the best model for this spot: HRRR until Friday 30 12:00 am; then NBM until Monday 9 2:00 am; then ECMWF until Thursday 12 10:00 pm; then GFS.

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	Clear sky	Clear sky	Clear	Clear
Temperature	41°	40°	40°	51°	62°	64°	57°	55°
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)	4 S	1 E	2 SSE	3 SW	12 SW	13 SW	9 SSW	10 SW
Humidity	80%	92%	89%	94%	66%	63%	76%	89%
UV	0	0	0	1	3	1	0	0
Model	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR

Do the models agree?

High confidence

The models agree for the next few days: the forecast is fairly solid.

What 6 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	Wed 4
ECMWF	63°	66°	52°	54°	64°	64°	57°
AIFS	64°	68°	53°	55°	64°	69°	69°
GFS	66°	68°	54°	59°	65°	62°	62°
ICON	67°	70°	55°	59°	71°	72°	66°
HRRR	64°	64°	—	—	—	—	—
NBM	67°	69°	57°	60°	65°	65°	67°
Confidence	high	high	high	high	high	medium	medium

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0	0	0	0	0	0	0
AIFS	0	0	0	0	0	0	0
GFS	0	0	0	0	0	0	0
ICON	0	0	0	0	0	0	0
HRRR	0	0	—	—	—	—	—
NBM	0	0	0	0	0	0	0
Confidence	high	high	high	high	high	high	high

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	1223	1325	1123	422	1119	1021	717
AIFS	11	11	10	5	9	9	8
GFS	1329	1530	1226	614	921	918	817
ICON	1024	1228	1025	49	718	49	921
HRRR	1321	1427	—	—	—	—	—
NBM	1119	1220	916	510	814	714	916
Confidence	high	high	high	high	high	high	high

Chance of rain from the ensemble models

Model	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF (51 scenarios)	0%	8%	0%	0%	4%	12%	18%
GFS (GEFS, 31 scenarios)	0%	3%	0%	0%	13%	20%	17%
NBM (NOAA)	0%	4%	0%	0%	2%	8%	12%
Thunderstorm (NBM)	0%	1%	0%	0%	0%	1%	1%

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: warmer and normal rain.

Next 6 weeks

When	TemperatureTemp.	Rain	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	Well above +5.4 °F	A bit above +23%	—
Nov 9 – Nov 15Nov 9–Nov 15	A bit above +1.1 °F	Normal	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +2.0 °F	Normal	51° / 41°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +2.5 °F	A bit above +31%	49° / 40°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +1.8 °F	A bit above +24%	47° / 38°

Coming months

When	TemperatureTemp.	Rain
November	A bit above +1.3 °F	A bit above +24%
December	Above +3.1 °F	A bit above +28%
January	Above +4.1 °F	A bit above +41%
February	Above +3.2 °F	A bit above +30%
March	Above +3.1 °F	A bit above +22%

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.

Swansea climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Swansea is from June to September: highs of 74 °F to 82 °F, about 9 rainy days a month and 7 hours of sunshine a day.

Hurricane season: from July to September, peaking in July. In the last 30 years (1996–2025), 7 tropical cyclones passed within 93 mi of Swansea, about 2 every 10 years. The most recent: Henri, in August 2021.

38° 20°

JanJ
40° 21°

FebF
47° 29°

MarM
57° 38°

AprA
67° 47°

MayM
76° 56°

JunJ
82° 63°

JulJ
81° 62°

AugA
74° 55°

SepS
64° 43°

OctO
53° 35°

NovN
44° 26°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	38°	20°	3.96 in	8	3.3	41°	4.2 ft	–
FebruaryFeb	40°	21°	3.50 in	7	4.8	37°	4.0 ft	–
MarchMar	47°	29°	5.08 in	9	5.3	38°	3.7 ft	–
AprilApr	57°	38°	4.20 in	8	6.1	44°	3.8 ft	–
MayMay	67°	47°	3.24 in	9	6.3	53°	3.0 ft	–
JuneJun	76°	56°	4.01 in	10	7.1	61°	2.7 ft	–
JulyJul	82°	63°	3.72 in	9	7.8	68°	2.7 ft	3
AugustAug	81°	62°	4.14 in	9	7.2	70°	2.6 ft	2
SeptemberSep	74°	55°	3.89 in	8	6.0	67°	3.1 ft	2
OctoberOct	64°	43°	4.61 in	9	4.6	61°	3.6 ft	–
NovemberNov	53°	35°	4.35 in	8	3.6	54°	3.9 ft	–
DecemberDec	44°	26°	4.66 in	9	3.0	47°	4.0 ft	–

Month	Water	Waves	Cyclones
Jan	41°	4.2 ft	–
Feb	37°	4.0 ft	–
Mar	38°	3.7 ft	–
Apr	44°	3.8 ft	–
May	53°	3.0 ft	–
Jun	61°	2.7 ft	–
Jul	68°	2.7 ft	3
Aug	70°	2.6 ft	2
Sep	67°	3.1 ft	2
Oct	61°	3.6 ft	–
Nov	54°	3.9 ft	–
Dec	47°	4.0 ft	–

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

A normal year brings 49.36 in of rain on about 104 days and about 2,000 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

Now40 °Ffeels like 36 °F

Tomorrow48 / 69 °F

It's 40 °F now (feels like 36 °F). Today, 39 °F to 64 °F; tomorrow, 48 °F to 69 °F.

Chance of rain

Today 0%
Fri 30 4%
Sat 31 0%
Sun 1 0%
Mon 2 2%
Tue 3 8%
Wed 4 12%

Today the chance of rain reaches 0%. The next day with likely rain is Thursday 5: 32% and 0.17 in.

No rain in the last 7 days.

Humidity and dew point

Humidity89%

Dew point37 °F

Humidity is 89% now and the dew point is 37 °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

Now0.0 mifoggy

Clouds0%

Visibility is foggy now (0.0 mi). There may be fog today at 5:00 am, 6:00 am, 7:00 am, 8:00 am.

UV index

Now0

Today's peak3moderate

Fri 30: 3 · Sat 31: 3 · Sun 1: 3

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

30.0030.2030.40 29.96

Steady now (−0.03 inHg in 3 hours). Over the next 48 hours: −0.04 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityGood · 39

Saharan dustNo

Previous days

The weather over the last 30 days, as the models analyzed it. Tap a day to see it hour by hour.

Day	Sky	Low / high	Max wind
Wed 28	Overcast	36 / 55 °F	7 mph NNW
Tue 27	Partly cloudy	46 / 57 °F	10 mph N
Mon 26	Mainly clear	44 / 65 °F	10 mph WSW
Sun 25	Partly cloudy	35 / 61 °F	7 mph SSW
Sat 24	Mainly clear	35 / 57 °F	5 mph NW
Fri 23	Clear sky	44 / 55 °F	13 mph N
Thu 22	Overcast	48 / 60 °F	16 mph N

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Overcast	49 / 55 °F	0	18 mph NNE
Tue 20	Overcast	44 / 61 °F	0	15 mph NNE
Mon 19	Partly cloudy	41 / 60 °F	0	9 mph NE
Sun 18	Clear sky	37 / 55 °F	0	8 mph NNE
Sat 17	Drizzle	42 / 62 °F	0.19 in	13 mph NNW
Fri 16	Rain	52 / 66 °F	0.80 in	15 mph S
Thu 15	Partly cloudy	53 / 63 °F	0	13 mph N
Wed 14	Overcast	62 / 77 °F	0	12 mph W
Tue 13	Light rain	56 / 62 °F	0.39 in	11 mph SE
Mon 12	Drizzle	53 / 68 °F	0.07 in	16 mph N
Sun 11	Rain	50 / 59 °F	1.03 in	13 mph E
Sat 10	Overcast	50 / 63 °F	0	9 mph NW
Fri 9	Overcast	53 / 67 °F	0	13 mph W
Thu 8	Light drizzle	58 / 71 °F	0.01 in	11 mph WSW
Wed 7	Mainly clear	45 / 62 °F	0	12 mph SSW
Tue 6	Clear sky	48 / 61 °F	0	12 mph WNW
Mon 5	Light drizzle	55 / 69 °F	0.01 in	15 mph WNW
Sun 4	Light drizzle	52 / 66 °F	0.04 in	9 mph NE
Sat 3	Overcast	55 / 69 °F	0	10 mph NNE
Fri 2	Light drizzle	66 / 75 °F	0.01 in	13 mph SW
Thu 1	Overcast	60 / 72 °F	0	12 mph SSW
Wed 30	Overcast	60 / 66 °F	0	7 mph SW
Tue 29	Overcast	57 / 66 °F	0	9 mph NW

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 SwanseaQuestions

What's the weather like today in Swansea?

Clear sky, from 39 °F to 64 °F, with a light air from the south-southeast (2 mph) and a 0% chance of rain.

Will it rain tomorrow in Swansea?

On Friday 30 the chance of rain is 4% (0.00 in): partly cloudy.

How warm will it be this week?

Between a low of 35 °F and a high of 69 °F; the warmest day, Friday 30.

What's the UV index today?

It reaches 3 (moderate). Hat, sunglasses and sunscreen around midday.

Is the pressure rising or falling?

It's 30.30 inHg and steady: −0.15 inHg over the last 24 hours.

When is the best time to visit Swansea?

The best time to visit Swansea is from June to September: highs of 74 °F to 82 °F, about 9 rainy days a month and 7 hours of sunshine a day.

What is the weather like in Swansea in October?

In October, Swansea normally sees highs of 64 °F and lows of 43 °F, with about 9 rainy days (4.61 in for the month) and 5 hours of sunshine a day. The sea is around 61 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Swansea?

The warmest is July, with average highs of 82 °F, and the coldest January, with lows of 20 °F. The wettest is March (5.08 in) and the driest, May.

When is hurricane season in Swansea?

Hurricane season: from July to September, peaking in July. In the last 30 years (1996–2025), 7 tropical cyclones passed within 93 mi of Swansea, about 2 every 10 years. The most recent: Henri, in August 2021.

More about Swansea today

Weather near Swansea

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 3.1 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 5:25 am (local time).

Spotted a mistake? Tell us · Where the weather and sea data come from