Weather in Sai Wan

14-day forecast · updated today, Thursday, October 29, at 4:48 pm (GMT+8)

Now · clear sky 80 °F

Feels like: 83 °F
Low / high: 77 / 84 °F
Rain: 0%
Wind: 7 mph ESE

→ 30.05 inHg · steady UV 7 · high

Today in Sai Wan: overcast, 77 °F to 84 °F, with a 0% chance of rain and a light breeze from the east-southeast (7 mph). Tomorrow, light drizzle, 76 °F to 84 °F and a 24% chance of rain. The warmest day of the week is Monday 2, at 85 °F. Next likely rain: Sunday 1 (39%).

Temperatures for the next 14 days

84° 77°
Today
84° 76°
Fri 30
83° 77°
Sat 31
83° 77°
Sun 1
85° 77°
Mon 2
84° 77°
Tue 3
83° 77°
Wed 4
84° 74°
Thu 5
79° 70°
Fri 6
80° 75°
Sat 7
79° 71°
Sun 8
81° 70°
Mon 9
80° 68°
Tue 10
76° 68°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Overcast	77 / 84 °F	0%	13 mph E	2.7 ft	12:35 pm · 10:10 pm	ECMWF
Fri 30	Light drizzle	76 / 84 °F	24% · 0.02 in	9 mph ESE	1.5 ft	1:48 pm · 10:53 pm	ECMWF
Sat 31	Mainly clear	77 / 83 °F	0%	13 mph E	2.0 ft	11:54 pm	ECMWF
Sun 1	Light drizzle	77 / 83 °F	39% · 0.08 in	14 mph E	2.1 ft	—	ECMWF
Mon 2	Light drizzle	77 / 85 °F	69% · 0.02 in	10 mph E	1.6 ft	1:55 am	ECMWF
Tue 3	Light drizzle	77 / 84 °F	33% · 0.04 in	14 mph E	2.2 ft	3:28 am · 6:48 pm	ECMWF
Wed 4	Light drizzle	77 / 83 °F	27% · 0.13 in	14 mph ESE	2.2 ft	4:55 am · 7:07 pm	ECMWF
Thu 5	Drizzle	74 / 84 °F	28% · 0.19 in	8 mph E	1.5 ft	6:16 am · 7:26 pm	ECMWF
Fri 6	Light drizzle	70 / 79 °F	29% · 0.12 in	15 mph NE	2.0 ft	7:25 am · 7:44 pm	ECMWF
Sat 7	Partly cloudy	75 / 80 °F	23%	17 mph E	2.3 ft	8:26 am · 8:03 pm	ECMWF
Sun 8	Light drizzle	71 / 79 °F	23% · 0.01 in	13 mph ENE	—	9:21 am · 8:21 pm	ECMWF
Mon 9	Light drizzle	70 / 81 °F	9% · 0.01 in	9 mph NE	—	10:11 am · 8:39 pm	ECMWF
Tue 10	Overcast	68 / 80 °F	4%	11 mph NE	—	11:00 am · 8:56 pm	ECMWF
Wed 11	Overcast	68 / 76 °F	2%	10 mph ENE	—	11:48 am · 9:15 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	Partly cloudy	Overcast	Partly cloudy	Clear sky	Clear sky	Clear sky	Clear	Clear
Temperature	78°	78°	77°	80°	83°	83°	79°	78°
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)	13 E	12 E	11 ENE	9 ENE	8 E	8 ESE	6 ESE	6 ESE
Humidity	76%	74%	76%	66%	56%	60%	69%	78%
UV	0	0	0	2	6	3	0	0
Model	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF

Do the models agree?

Medium confidence

They broadly agree, but not quite on wind on Saturday 31: take it with some caution.

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	Wed 4
ECMWF	84°	84°	83°	83°	85°	84°	83°
AIFS	82°	83°	82°	82°	84°	81°	82°
GFS	80°	81°	80°	80°	85°	79°	79°
ICON	81°	84°	82°	82°	85°	81°	80°
Confidence	high	high	high	high	high	high	high

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0	0.02 in	0	0.08 in	0.02 in	0.04 in	0.13 in
AIFS	0	0	0	0.05 in	0.01 in	0.08 in	0.05 in
GFS	0.01 in	0	0.01 in	0.13 in	0	0.04 in	0.04 in
ICON	0.00 in	0	0	0	0	0	0
Confidence	high	high	high	medium	high	medium	medium

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	1328	920	1331	1432	1023	1432	1431
AIFS	13	6	14	13	7	15	12
GFS	1613	1110	1818	1618	78	1919	1616
ICON	1021	512	1124	920	614	1226	1123
Confidence	high	high	medium	medium	high	medium	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%	24%	0%	39%	69%	33%	27%
GFS (GEFS, 31 scenarios)	0%	0%	3%	27%	6%	48%	6%

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	Above +4.5 °F	Below −67%	—
Nov 9 – Nov 15Nov 9–Nov 15	Above +3.2 °F	Normal	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +2.5 °F	Above +97%	77° / 69°
Nov 23 – Nov 29Nov 23–Nov 29	Above +3.4 °F	Normal	76° / 67°
Nov 30 – Dec 6Nov 30–Dec 6	Above +3.6 °F	Above +58%	74° / 65°

Coming months

When	TemperatureTemp.	Rain
November	A bit above +2.5 °F	A bit above +42%
December	A bit above +1.1 °F	A bit above +45%
January	A bit above +1.8 °F	A bit above +24%
February	A bit above +2.3 °F	Above +64%
March	A bit above +1.6 °F	Above +61%

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. The long-range sea temperature isn't usable at this spot (the model's grid cell falls on land).

Sai Wan climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Sai Wan is from October to December: highs of 70 °F to 83 °F, about 4 rainy days a month and 5 hours of sunshine a day.

Typhoon season: from June to September, peaking in August. In the last 30 years (1996–2025), 41 tropical cyclones passed within 93 mi of Sai Wan, one or two a year; 17 of them with hurricane-force winds (74 mph or more). The most recent: Mitag, in September 2025.

66° 55°

JanJ
67° 57°

FebF
72° 62°

MarM
78° 68°

AprA
84° 75°

MayM
87° 78°

JunJ
89° 79°

JulJ
89° 79°

AugA
88° 77°

SepS
83° 73°

OctO
77° 66°

NovN
70° 58°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	66°	55°	0.93 in	3	3.6	67°	1.2 ft	–
FebruaryFeb	67°	57°	1.48 in	5	2.3	67°	1.1 ft	–
MarchMar	72°	62°	2.56 in	7	1.7	69°	1.1 ft	–
AprilApr	78°	68°	5.38 in	11	2.1	73°	1.0 ft	1
MayMay	84°	75°	9.51 in	15	4.3	79°	1.0 ft	1
JuneJun	87°	78°	14.63 in	20	3.4	83°	1.2 ft	5
JulyJul	89°	79°	13.14 in	18	5.5	84°	1.2 ft	6
AugustAug	89°	79°	15.76 in	19	4.7	84°	1.1 ft	13
SeptemberSep	88°	77°	9.67 in	13	5.1	83°	1.0 ft	11
OctoberOct	83°	73°	3.35 in	5	5.7	80°	1.1 ft	2
NovemberNov	77°	66°	1.39 in	3	5.1	75°	1.1 ft	2
DecemberDec	70°	58°	1.17 in	3	4.4	70°	1.3 ft	–

Month	Water	Waves	Cyclones
Jan	67°	1.2 ft	–
Feb	67°	1.1 ft	–
Mar	69°	1.1 ft	–
Apr	73°	1.0 ft	1
May	79°	1.0 ft	1
Jun	83°	1.2 ft	5
Jul	84°	1.2 ft	6
Aug	84°	1.1 ft	13
Sep	83°	1.0 ft	11
Oct	80°	1.1 ft	2
Nov	75°	1.1 ft	2
Dec	70°	1.3 ft	–

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

A normal year brings 78.96 in of rain on about 122 days and about 1,450 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

Now80 °Ffeels like 83 °F

Tomorrow76 / 84 °F

It's 80 °F now (feels like 83 °F). Today, 77 °F to 84 °F; tomorrow, 76 °F to 84 °F.

Chance of rain

Today 0%
Fri 30 24% 0.02 in
Sat 31 0%
Sun 1 39% 0.08 in
Mon 2 69% 0.02 in
Tue 3 33% 0.04 in
Wed 4 27% 0.13 in

Today the chance of rain reaches 0%. The next day with likely rain is Sunday 1: 39% and 0.08 in.

Recent rain: last 24 hours, 0.00 in; last 3 days, 0.07 in; last 7 days, 0.07 in.

Humidity and dew point

Humidity66%

Dew point67 °F

Humidity is 66% now and the dew point is 67 °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

Clouds5%

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 peak7high

Fri 30: 6 · Sat 31: 7 · Sun 1: 6

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

30.0030.1030.20 30.12

Steady now (−0.01 inHg in 3 hours). Over the next 48 hours: −0.03 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityModerate · 60

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	Rain	Max wind
Wed 28	Light drizzle	77 / 83 °F	0.01 in	14 mph E
Tue 27	Light drizzle	76 / 85 °F	0.06 in	11 mph E
Mon 26	Mainly clear	76 / 86 °F	0	10 mph ENE
Sun 25	Overcast	74 / 85 °F	0	11 mph NE
Sat 24	Overcast	76 / 88 °F	0	14 mph NNW
Fri 23	Partly cloudy	75 / 88 °F	0	14 mph NNW
Thu 22	Overcast	77 / 87 °F	0	11 mph N

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Partly cloudy	78 / 91 °F	0	9 mph NE
Tue 20	Light drizzle	79 / 88 °F	0.05 in	8 mph ESE
Mon 19	Light drizzle	77 / 89 °F	0.01 in	8 mph ESE
Sun 18	Light drizzle	79 / 88 °F	0.02 in	11 mph ESE
Sat 17	Light drizzle	80 / 85 °F	0.02 in	15 mph E
Fri 16	Overcast	78 / 86 °F	0	12 mph ESE
Thu 15	Mainly clear	79 / 85 °F	0	14 mph E
Wed 14	Light drizzle	77 / 86 °F	0.02 in	15 mph ESE
Tue 13	Light drizzle	77 / 88 °F	0.01 in	8 mph SSE
Mon 12	Light drizzle	79 / 87 °F	0.04 in	10 mph ESE
Sun 11	Clear sky	77 / 87 °F	0	12 mph E
Sat 10	Overcast	77 / 86 °F	0	9 mph E
Fri 9	Overcast	78 / 86 °F	0	10 mph E
Thu 8	Overcast	77 / 84 °F	0	12 mph ENE
Wed 7	Overcast	74 / 82 °F	0	11 mph NE
Tue 6	Overcast	73 / 83 °F	0	15 mph N
Mon 5	Light drizzle	76 / 86 °F	0.02 in	15 mph N
Sun 4	Showers	77 / 88 °F	0.72 in	6 mph ESE
Sat 3	Showers	77 / 85 °F	1.24 in	11 mph ESE
Fri 2	Thunderstorm	79 / 85 °F	0.64 in	7 mph ENE
Thu 1	Light drizzle	82 / 91 °F	0.01 in	7 mph SW
Wed 30	Mainly clear	82 / 91 °F	0	7 mph SW
Tue 29	Light drizzle	82 / 91 °F	0.05 in	7 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 Sai WanQuestions

What's the weather like today in Sai Wan?

Overcast, from 77 °F to 84 °F, with a light breeze from the east-southeast (7 mph) and a 0% chance of rain.

Will it rain tomorrow in Sai Wan?

On Friday 30 the chance of rain is 24% (0.02 in): light drizzle.

How warm will it be this week?

Between a low of 76 °F and a high of 85 °F; the warmest day, Monday 2.

What's the UV index today?

It reaches 7 (high). Sunscreen, hat and shade between 12 and 4 pm.

Is the pressure rising or falling?

It's 30.05 inHg and steady: 0.00 inHg over the last 24 hours.

When is the best time to visit Sai Wan?

The best time to visit Sai Wan is from October to December: highs of 70 °F to 83 °F, about 4 rainy days a month and 5 hours of sunshine a day.

What is the weather like in Sai Wan in October?

In October, Sai Wan normally sees highs of 83 °F and lows of 73 °F, with about 5 rainy days (3.35 in for the month) and 6 hours of sunshine a day. The sea is around 80 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Sai Wan?

The warmest is July, with average highs of 89 °F, and the coldest January, with lows of 55 °F. The wettest is August (15.76 in) and the driest, January.

When is typhoon season in Sai Wan?

Typhoon season: from June to September, peaking in August. In the last 30 years (1996–2025), 41 tropical cyclones passed within 93 mi of Sai Wan, one or two a year; 17 of them with hurricane-force winds (74 mph or more). The most recent: Mitag, in September 2025.

More about Sai Wan today

Weather near Sai Wan

Mount Davis 80 °F · clear sky · 0.5 mi

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 8.3 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 4:48 pm (local time).

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