Weather in São Martinho do Porto

14-day forecast · updated today, Thursday, October 29, at 5:40 am (WET)

Now · clear 52 °F

Feels like: 51 °F
Low / high: 50 / 71 °F
Rain: 0%
Wind: 2 mph ESE

→ 30.14 inHg · steady

Today in São Martinho do Porto: mainly clear, 50 °F to 71 °F, with a 0% chance of rain and a light air from the east-southeast (2 mph). Tomorrow, overcast, 50 °F to 74 °F and a 0% chance of rain. The warmest day of the week is Sunday 1, at 77 °F. No significant rain expected over the next 7 days.

Temperatures for the next 14 days

71° 50°
Today
74° 50°
Fri 30
71° 51°
Sat 31
77° 50°
Sun 1
70° 51°
Mon 2
75° 53°
Tue 3
66° 53°
Wed 4
65° 49°
Thu 5
69° 53°
Fri 6
64° 58°
Sat 7
64° 60°
Sun 8
67° 61°
Mon 9
68° 59°
Tue 10
64° 58°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Mainly clear	50 / 71 °F	0%	4 mph NNE	9.1 ft	4:11 am · 4:40 pm	ICON-EU
Fri 30	Overcast	50 / 74 °F	0%	4 mph NE	5.1 ft	5:00 am · 5:35 pm	ICON-EU
Sat 31	Overcast	51 / 71 °F	0%	4 mph NNE	6.4 ft	5:57 am · 6:40 pm	ICON-EU
Sun 1	Partly cloudy	50 / 77 °F	0%	5 mph ESE	6.4 ft	7:06 am · 7:59 pm	ICON-EU
Mon 2	Partly cloudy	51 / 70 °F	0%	7 mph N	4.9 ft	8:27 am · 9:25 pm	ICON-EU
Tue 3	Overcast	53 / 75 °F	2%	5 mph ENE	3.6 ft	9:49 am · 10:39 pm	ICON-EU + ECMWF
Wed 4	Partly cloudy	53 / 66 °F	8%	11 mph E	4.7 ft	10:57 am · 11:36 pm	ECMWF
Thu 5	Clear sky	49 / 65 °F	22%	8 mph SE	4.5 ft	11:52 am	ECMWF
Fri 6	Drizzle	53 / 69 °F	29% · 0.37 in	17 mph SE	3.6 ft	12:23 am · 12:38 pm	ECMWF
Sat 7	Light rain	58 / 64 °F	35% · 0.66 in	16 mph SE	3.9 ft	1:03 am · 1:18 pm	ECMWF
Sun 8	Rain	60 / 64 °F	39% · 1.49 in	21 mph SE	4.5 ft	1:39 am · 1:56 pm	ECMWF
Mon 9	Rain	61 / 67 °F	46% · 0.73 in	11 mph SSE	3.5 ft	2:13 am · 2:31 pm	ECMWF
Tue 10	Drizzle	59 / 68 °F	51% · 0.20 in	9 mph SSW	3.3 ft	2:46 am · 3:05 pm	ECMWF
Wed 11	Light drizzle	58 / 64 °F	45% · 0.05 in	6 mph SSW	2.9 ft	3:19 am · 3:39 pm	ECMWF

Each hour comes from the best model for this spot: ICON-EU until Tuesday 3 1:00 am; then ECMWF until Thursday 12 3:00 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	Mainly clear	Clear	Clear sky	Clear sky	Clear sky	Clear	Clear
Temperature	56°	55°	52°	58°	70°	71°	65°	59°
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 NE	3 NE	3 ESE	0 E	2 NW	4 NNW	2 NNE	2 ESE
Humidity	91%	89%	91%	83%	63%	60%	77%	84%
UV	0	0	0	1	4	1	0	0
Model	ICON-EU	ICON-EU	ICON-EU	ICON-EU	ICON-EU	ICON-EU	ICON-EU	ICON-EU

Do the models agree?

Medium confidence

They broadly agree, but not quite on temperature today: take it with some caution.

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	79°	78°	76°	79°	74°	75°	66°
AIFS	73°	72°	70°	74°	72°	70°	67°
GFS	79°	78°	70°	80°	79°	74°	73°
ICON	80°	80°	76°	79°	73°	71°	74°
ARPEGE	72°	75°	68°	76°	—	—	—
ICON-EU	71°	74°	71°	77°	70°	—	—
Confidence	medium	high	medium	high	high	high	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
ARPEGE	0	0	0	0	—	—	—
ICON-EU	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	813	817	615	726	725	518	1122
AIFS	7	7	6	8	7	7	10
GFS	88	913	910	1220	914	75	99
ICON	510	815	714	612	918	713	510
ARPEGE	814	712	712	49	—	—	—
ICON-EU	49	49	49	510	713	—	—
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%	0%	0%	0%	0%	2%	8%
GFS (GEFS, 31 scenarios)	0%	0%	0%	0%	0%	0%	8%

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, normal rain and a near-normal sea.

Next 6 weeks

When	TemperatureTemp.	Rain	Sea	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	Normal +0.2 °F	A bit below −37%	A bit below −1.4 °F	—
Nov 9 – Nov 15Nov 9–Nov 15	A bit above +2.0 °F	Above +57%	A bit below −0.5 °F	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +2.0 °F	A bit above +27%	Normal +0.4 °F	61° / 56°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +2.0 °F	Normal	A bit above +0.7 °F	60° / 55°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +2.0 °F	A bit above +21%	A bit above +0.9 °F	60° / 55°

Coming months

When	TemperatureTemp.	Rain	Sea
November	Normal +0.5 °F	Normal	A bit below −1.1 °F
December	A bit above +1.3 °F	A bit above +23%	A bit below −0.5 °F
January	A bit above +1.6 °F	A bit above +31%	Normal +0.2 °F
February	A bit above +1.8 °F	A bit above +23%	A bit above +0.7 °F
March	A bit above +1.4 °F	Normal	A bit above +1.1 °F

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.

São Martinho do Porto climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit São Martinho do Porto is from June to August: highs of 71 °F to 74 °F, about 2 rainy days a month and 10 hours of sunshine a day.

Tropical cyclones rarely pass near São Martinho do Porto: one within 93 mi in the last 30 years (1996–2025), Alpha, in September 2020.

58° 47°

JanJ
60° 48°

FebF
63° 51°

MarM
65° 53°

AprA
68° 57°

MayM
71° 60°

JunJ
72° 62°

JulJ
74° 62°

AugA
73° 61°

SepS
70° 58°

OctO
63° 52°

NovN
60° 49°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves
JanuaryJan	58°	47°	3.19 in	9	4.5	58°	9.1 ft
FebruaryFeb	60°	48°	2.12 in	7	5.5	57°	9.9 ft
MarchMar	63°	51°	2.15 in	7	6.4	57°	8.4 ft
AprilApr	65°	53°	2.33 in	8	7.8	59°	7.3 ft
MayMay	68°	57°	1.78 in	6	9.8	61°	6.0 ft
JuneJun	71°	60°	0.59 in	2	10.3	64°	5.1 ft
JulyJul	72°	62°	0.21 in	1	10.8	65°	5.1 ft
AugustAug	74°	62°	0.33 in	2	9.9	66°	4.9 ft
SeptemberSep	73°	61°	1.22 in	4	8.1	65°	5.8 ft
OctoberOct	70°	58°	3.37 in	9	6.5	64°	7.1 ft
NovemberNov	63°	52°	3.85 in	10	4.7	62°	8.7 ft
DecemberDec	60°	49°	3.52 in	10	4.0	59°	9.0 ft

Month	Water	Waves
Jan	58°	9.1 ft
Feb	57°	9.9 ft
Mar	57°	8.4 ft
Apr	59°	7.3 ft
May	61°	6.0 ft
Jun	64°	5.1 ft
Jul	65°	5.1 ft
Aug	66°	4.9 ft
Sep	65°	5.8 ft
Oct	64°	7.1 ft
Nov	62°	8.7 ft
Dec	59°	9.0 ft

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

A normal year brings 24.65 in of rain on about 76 days and about 2,700 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

Now52 °Ffeels like 51 °F

Tomorrow50 / 74 °F

It's 52 °F now (feels like 51 °F). Today, 50 °F to 71 °F; tomorrow, 50 °F to 74 °F.

Chance of rain

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

Today the chance of rain reaches 0%. No significant rain expected this week.

Recent rain: last 24 hours, 0.00 in; last 3 days, 0.00 in; last 7 days, 0.04 in.

Humidity and dew point

Humidity90%

Dew point50 °F

Humidity is 90% now and the dew point is 50 °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

Now8.4 migood

Clouds5%

Visibility is good now (8.4 mi). No fog expected today.

UV index

Now0

Today's peak4moderate

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

30.1030.2030.30 30.05

Steady now (−0.02 inHg in 3 hours). Over the next 48 hours: −0.08 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityFair · 34

PollenNoneToday, at most none.

Pollen: Copernicus CAMS model (a rough guide, not a pollen trap). Levels use each type's usual thresholds.

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	Overcast	58 / 71 °F	0	8 mph N
Tue 27	Overcast	58 / 73 °F	0	7 mph NNW
Mon 26	Partly cloudy	54 / 76 °F	0	7 mph NNE
Sun 25	Overcast	53 / 70 °F	0	9 mph N
Sat 24	Partly cloudy	49 / 67 °F	0	10 mph N
Fri 23	Light drizzle	55 / 67 °F	0.04 in	15 mph N
Thu 22	Overcast	49 / 67 °F	0	8 mph N

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Light drizzle	55 / 67 °F	0.01 in	12 mph N
Tue 20	Overcast	53 / 66 °F	0	11 mph NNW
Mon 19	Clear sky	55 / 72 °F	0	10 mph N
Sun 18	Light drizzle	59 / 76 °F	0.03 in	7 mph NE
Sat 17	Light drizzle	61 / 72 °F	0.00 in	10 mph NNW
Fri 16	Overcast	61 / 79 °F	0	11 mph N
Thu 15	Mainly clear	66 / 82 °F	0	9 mph N
Wed 14	Partly cloudy	60 / 82 °F	0	8 mph N
Tue 13	Overcast	59 / 75 °F	0	10 mph N
Mon 12	Overcast	58 / 73 °F	0	9 mph NNW
Sun 11	Light drizzle	60 / 70 °F	0.01 in	11 mph NNW
Sat 10	Overcast	57 / 77 °F	0	9 mph N
Fri 9	Clear sky	60 / 78 °F	0	13 mph NE
Thu 8	Partly cloudy	58 / 80 °F	0	14 mph N
Wed 7	Light drizzle	60 / 72 °F	0.06 in	11 mph NNW
Tue 6	Light drizzle	63 / 72 °F	0.09 in	9 mph W
Mon 5	Drizzle	67 / 79 °F	0.11 in	12 mph ESE
Sun 4	Drizzle	64 / 78 °F	0.22 in	14 mph SE
Sat 3	Light drizzle	67 / 83 °F	0.01 in	11 mph ENE
Fri 2	Overcast	59 / 81 °F	0	9 mph N
Thu 1	Overcast	59 / 71 °F	0	14 mph N
Wed 30	Heavy drizzle	62 / 74 °F	0.32 in	11 mph WNW
Tue 29	Drizzle	70 / 83 °F	0.04 in	19 mph S

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 Martinho do PortoQuestions

What's the weather like today in São Martinho do Porto?

Mainly clear, from 50 °F to 71 °F, with a light air from the east-southeast (2 mph) and a 0% chance of rain.

Will it rain tomorrow in São Martinho do Porto?

On Friday 30 the chance of rain is 0% (0.00 in): overcast.

How warm will it be this week?

Between a low of 50 °F and a high of 77 °F; the warmest day, Sunday 1.

What's the UV index today?

It reaches 4 (moderate). Hat, sunglasses and sunscreen around midday.

Is the pressure rising or falling?

It's 30.14 inHg and steady: −0.09 inHg over the last 24 hours.

When is the best time to visit São Martinho do Porto?

The best time to visit São Martinho do Porto is from June to August: highs of 71 °F to 74 °F, about 2 rainy days a month and 10 hours of sunshine a day.

What is the weather like in São Martinho do Porto in October?

In October, São Martinho do Porto normally sees highs of 70 °F and lows of 58 °F, with about 9 rainy days (3.37 in for the month) and 6 hours of sunshine a day. The sea is around 64 °F. These are 1991–2020 averages.

What are the warmest and wettest months in São Martinho do Porto?

The warmest is August, with average highs of 74 °F, and the coldest January, with lows of 47 °F. The wettest is November (3.85 in) and the driest, July.

More about São Martinho do Porto today

Weather near São Martinho do Porto

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 7.1 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 5:40 am (local time).

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