Weather in São Sebastião

14-day forecast · updated today, Thursday, October 29, at 12:41 am (GMT-3)

Now · light drizzle 69 °F

Feels like: 74 °F
Low / high: 67 / 72 °F
Rain: 100% · 1.58 in
Wind: 3 mph NNE

↘ 30.05 inHg · falling

Today in São Sebastião: rain, 67 °F to 72 °F, with a 100% chance of rain (1.58 in) and a light air from the north-northeast (3 mph). Tomorrow, light drizzle, 67 °F to 77 °F and a 100% chance of rain. The warmest day of the week is Wednesday 4, at 89 °F.

Temperatures for the next 14 days

72° 67°
Today
77° 67°
Fri 30
73° 66°
Sat 31
77° 68°
Sun 1
83° 68°
Mon 2
84° 71°
Tue 3
89° 70°
Wed 4
85° 74°
Thu 5
91° 74°
Fri 6
90° 74°
Sat 7
78° 69°
Sun 8
75° 62°
Mon 9
75° 60°
Tue 10
76° 67°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Rain	67 / 72 °F	100% · 1.58 in	4 mph NNE	3.9 ft	3:45 am · 3:19 pm	ECMWF
Fri 30	Light drizzle	67 / 77 °F	100% · 0.06 in	9 mph SW	3.4 ft	4:19 am · 3:50 pm	ECMWF
Sat 31	Rain	66 / 73 °F	97% · 0.53 in	7 mph WSW	4.3 ft	9:33 am · 4:26 pm	ECMWF
Sun 1	Drizzle	68 / 77 °F	61% · 0.20 in	5 mph NNE	3.7 ft	10:40 am · 5:15 pm	ECMWF
Mon 2	Heavy drizzle	68 / 83 °F	62% · 0.24 in	5 mph NE	3.1 ft	11:31 am · 6:43 pm · 11:33 pm	ECMWF
Tue 3	Overcast	71 / 84 °F	55%	5 mph SW	2.9 ft	12:12 pm · 11:59 pm	ECMWF
Wed 4	Overcast	70 / 89 °F	31%	3 mph NE	2.5 ft	12:44 pm · 11:49 pm	ECMWF
Thu 5	Light drizzle	74 / 85 °F	55% · 0.05 in	6 mph ESE	1.8 ft	1:04 pm · 11:54 pm	ECMWF
Fri 6	Overcast	74 / 91 °F	68%	4 mph NE	2.3 ft	1:04 pm	ECMWF
Sat 7	Light showers	74 / 90 °F	83% · 0.54 in	6 mph SSW	1.8 ft	12:22 am · 12:55 pm	ECMWF
Sun 8	Showers	69 / 78 °F	78% · 1.91 in	11 mph SW	2.8 ft	12:55 am · 1:08 pm	ECMWF
Mon 9	Drizzle	62 / 75 °F	62% · 0.17 in	8 mph SW	2.8 ft	1:30 am · 1:33 pm	ECMWF
Tue 10	Drizzle	60 / 75 °F	61% · 0.13 in	4 mph NNE	2.4 ft	2:04 am · 2:02 pm	ECMWF
Wed 11	Light drizzle	67 / 76 °F	63% · 0.15 in	9 mph NE	3.0 ft	2:38 am · 2:33 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	Overcast	Light drizzle	Light rain	Heavy drizzle	Drizzle	Light rain	Rain	Rain
Temperature	69°	68°	68°	71°	72°	71°	70°	69°
Chance of rain	43%	65%	94%	100%	98%	100%	100%	100%
Rain	0.00 in	0.02 in	0.07 in	0.04 in	0.04 in	0.08 in	0.13 in	0.15 in
Wind (mph)	4 NNE	1 N	1 N	0 SW	1 SSE	0 SSW	0 E	3 NNE
Humidity	93%	99%	99%	98%	97%	100%	100%	99%
UV	0	0	0	3	2	1	0	0
Model	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF

Do the models agree?

Medium confidence

They broadly agree, but not quite on rain today: 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	72°	77°	73°	77°	83°	84°	89°
AIFS	73°	76°	76°	76°	78°	82°	86°
GFS	73°	79°	78°	78°	82°	85°	87°
ICON	72°	76°	75°	74°	77°	84°	95°
Confidence	high	high	high	high	medium	high	medium

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	1.58 in	0.06 in	0.53 in	0.20 in	0.24 in	0	0
AIFS	0.69 in	0.28 in	0.14 in	0.14 in	0.22 in	0.10 in	0.13 in
GFS	0.54 in	0.21 in	0.10 in	0.15 in	0.38 in	0.17 in	0.59 in
ICON	0.86 in	0.10 in	0.01 in	0	0	0	0
Confidence	medium	medium	medium	medium	medium	medium	low

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	415	928	722	519	517	520	315
AIFS	3	8	5	8	6	4	6
GFS	29	47	45	59	49	411	616
ICON	38	615	612	613	510	511	410
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)	100%	100%	97%	61%	62%	55%	31%
GFS (GEFS, 31 scenarios)	100%	100%	65%	61%	80%	84%	84%

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: a bit warmer and normal rain.

Next 6 weeks

When	TemperatureTemp.	Rain	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	A bit above +2.0 °F	A bit above +25%	—
Nov 9 – Nov 15Nov 9–Nov 15	Normal +0.2 °F	Normal	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +2.5 °F	Normal	80° / 69°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +2.0 °F	Normal	80° / 69°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +1.6 °F	Normal	79° / 69°

Coming months

When	TemperatureTemp.	Rain
November	A bit above +2.3 °F	Normal
December	Above +2.9 °F	Normal
January	A bit above +2.3 °F	Normal
February	A bit above +2.5 °F	Normal
March	A bit above +2.3 °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. The long-range sea temperature isn't usable at this spot (the model's grid cell falls on land).

São Sebastião climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit São Sebastião is from June to August: highs of 74 °F to 75 °F, about 6 rainy days a month and 5 hours of sunshine a day.

85° 70°

JanJ
85° 70°

FebF
84° 69°

MarM
81° 66°

AprA
76° 61°

MayM
75° 58°

JunJ
74° 56°

JulJ
75° 59°

AugA
76° 62°

SepS
78° 65°

OctO
79° 66°

NovN
82° 69°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves
JanuaryJan	85°	70°	11.81 in	23	4.2	80°	4.3 ft
FebruaryFeb	85°	70°	10.18 in	19	4.8	81°	4.3 ft
MarchMar	84°	69°	10.66 in	19	4.5	80°	4.9 ft
AprilApr	81°	66°	6.90 in	11	5.0	78°	5.0 ft
MayMay	76°	61°	5.31 in	8	4.5	75°	5.7 ft
JuneJun	75°	58°	3.47 in	7	4.2	72°	5.2 ft
JulyJul	74°	56°	3.95 in	6	4.4	70°	5.5 ft
AugustAug	75°	59°	3.15 in	6	5.0	69°	5.9 ft
SeptemberSep	76°	62°	4.88 in	11	3.7	70°	5.8 ft
OctoberOct	78°	65°	7.37 in	14	3.9	72°	5.5 ft
NovemberNov	79°	66°	8.49 in	17	3.4	74°	5.2 ft
DecemberDec	82°	69°	9.21 in	20	3.8	77°	4.5 ft

Month	Water	Waves
Jan	80°	4.3 ft
Feb	81°	4.3 ft
Mar	80°	4.9 ft
Apr	78°	5.0 ft
May	75°	5.7 ft
Jun	72°	5.2 ft
Jul	70°	5.5 ft
Aug	69°	5.9 ft
Sep	70°	5.8 ft
Oct	72°	5.5 ft
Nov	74°	5.2 ft
Dec	77°	4.5 ft

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

A normal year brings 85.39 in of rain on about 161 days and about 1,550 hours of sunshine.

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

Now69 °Ffeels like 74 °F

Tomorrow67 / 77 °F

It's 69 °F now (feels like 74 °F). Today, 67 °F to 72 °F; tomorrow, 67 °F to 77 °F.

Chance of rain

Today 100% 1.58 in
Fri 30 100% 0.06 in
Sat 31 97% 0.53 in
Sun 1 61% 0.20 in
Mon 2 62% 0.24 in
Tue 3 55%
Wed 4 31%

Today the chance of rain reaches 100%, with 1.58 in in total. The next day with likely rain is Friday 30: 100% and 0.06 in.

Recent rain: last 24 hours, 0.01 in; last 3 days, 0.69 in; last 7 days, 2.93 in.

Humidity and dew point

Humidity94%

Dew point67 °F

Humidity is 94% now and the dew point is 67 °F. The temperature is very close to the dew point: fog may form.

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

Clouds99%

Visibility is good now (15 mi). There may be fog today at 3:00 pm, 4:00 pm, 5:00 pm, 6:00 pm.

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

UV index

Now0

Today's peak3moderate

Fri 30: 8 · Sat 31: 7 · Sun 1: 9

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 Anglers expect normal activity
↘ Falling · now Anglers say fish feed more before the change

29.8030.0030.20 29.84

Falling now (−0.04 inHg in 3 hours). Over the next 48 hours: −0.17 inHg. Falling pressure: anglers say fish feed more before the change. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityFair · 34

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	65 / 75 °F	0.01 in	8 mph NE
Tue 27	Light drizzle	62 / 74 °F	0.14 in	7 mph NE
Mon 26	Light rain	62 / 69 °F	0.56 in	10 mph SW
Sun 25	Showers	69 / 78 °F	1.52 in	8 mph SW
Sat 24	Showers	67 / 83 °F	0.27 in	7 mph ENE
Fri 23	Light drizzle	69 / 84 °F	0.13 in	6 mph ENE
Thu 22	Drizzle	68 / 73 °F	0.31 in	12 mph NE

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Light drizzle	65 / 75 °F	0.10 in	9 mph NE
Tue 20	Drizzle	65 / 74 °F	0.14 in	5 mph NNE
Mon 19	Light drizzle	65 / 72 °F	0.07 in	5 mph WSW
Sun 18	Light drizzle	63 / 75 °F	0.17 in	8 mph SW
Sat 17	Rain	66 / 75 °F	0.78 in	6 mph SW
Fri 16	Showers	71 / 82 °F	1.19 in	5 mph SSW
Thu 15	Heavy drizzle	71 / 81 °F	0.24 in	4 mph NNE
Wed 14	Drizzle	70 / 84 °F	0.10 in	4 mph W
Tue 13	Light drizzle	69 / 81 °F	0.01 in	5 mph NE
Mon 12	Light rain	71 / 74 °F	0.29 in	5 mph WSW
Sun 11	Light rain	70 / 81 °F	0.47 in	7 mph SW
Sat 10	Drizzle	70 / 87 °F	0.03 in	6 mph E
Fri 9	Drizzle	68 / 88 °F	0.11 in	6 mph N
Thu 8	Overcast	65 / 82 °F	0	6 mph NE
Wed 7	Light rain	68 / 76 °F	0.35 in	12 mph SW
Tue 6	Light rain	67 / 77 °F	0.46 in	5 mph NE
Mon 5	Heavy drizzle	68 / 75 °F	0.28 in	6 mph SW
Sun 4	Heavy drizzle	68 / 88 °F	0.33 in	9 mph ENE
Sat 3	Light drizzle	65 / 74 °F	0.05 in	11 mph NE
Fri 2	Light rain	66 / 70 °F	0.39 in	6 mph SW
Thu 1	Heavy drizzle	69 / 73 °F	0.33 in	9 mph SW
Wed 30	Light rain	71 / 90 °F	0.19 in	5 mph ENE
Tue 29	Light showers	71 / 87 °F	0.25 in	6 mph ENE

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 São SebastiãoQuestions

What's the weather like today in São Sebastião?

Rain, from 67 °F to 72 °F, with a light air from the north-northeast (3 mph) and a 100% chance of rain.

Will it rain tomorrow in São Sebastião?

On Friday 30 the chance of rain is 100% (0.06 in): light drizzle.

How warm will it be this week?

Between a low of 66 °F and a high of 89 °F; the warmest day, Wednesday 4.

What's the UV index today?

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

Is the pressure rising or falling?

It's 30.05 inHg and falling: −0.13 inHg over the last 24 hours.

When is the best time to visit São Sebastião?

The best time to visit São Sebastião is from June to August: highs of 74 °F to 75 °F, about 6 rainy days a month and 5 hours of sunshine a day.

What is the weather like in São Sebastião in October?

In October, São Sebastião normally sees highs of 78 °F and lows of 65 °F, with about 14 rainy days (7.37 in for the month) and 4 hours of sunshine a day. The sea is around 72 °F. These are 1991–2020 averages.

What are the warmest and wettest months in São Sebastião?

The warmest is February, with average highs of 85 °F, and the coldest July, with lows of 56 °F. The wettest is January (11.81 in) and the driest, August.

More about São Sebastião today

Weather near São Sebastião

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 5.8 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 12:41 am (local time).

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