worldweather33°Cexceptionally warm
usually 22°C–27°C
warmer than 98% of similar days
night: exceptionally warm
rain: more rain than usual
wind: typical
Weather in Porto - 14-day forecast
Detailed weather forecast for Porto, Portugal: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Porto
today🌧️
33°💧 0.2 mm
Sun🌤️
28°night 20°
Mon☀️
22°night 19°
Tue☁️
20°night 19°
Wed☁️
22°night 21°
Thu☀️
22°💧 3.8 mm
Fri☀️
25°💧 14.7 mm
Sat☀️
27°💧 5.2 mm
Forecast vs 1991-2020 climate normal
NASA POWERHow does the current forecast compare with normal?
We compare the coming days with weather usually observed at this time of year.
Saturday 5 Sept in Porto, the forecast high is 33°C. Typical daytime temperatures at this time of year range from 22°C to 27°C, so it will be exceptionally warm. It is warmer than 98% of similar days.
28°Cwarmer than usual
usually 22°C–27°C
warmer than 84% of similar days
night: exceptionally warm
rain: less rain than usual
wind: exceptionally strong
22°Ccooler than usual
usually 22°C–27°C
cooler than 79% of similar days
night: exceptionally warm
rain: less rain than usual
wind: exceptionally strong
20°Cexceptionally cool
usually 21°C–27°C
cooler than 95% of similar days
night: exceptionally warm
rain: less rain than usual
wind: exceptionally strong
22°Cnear normal
usually 21°C–27°C
night: exceptionally warm
rain: less rain than usual
wind: exceptionally strong
22°Cnear normal
usually 21°C–27°C
night: exceptionally warm
rain: exceptionally wet
wind: exceptionally strong
25°Cnear normal
usually 21°C–27°C
night: exceptionally warm
rain: exceptionally wet
wind: exceptionally strong
How warm was this week in previous years?
Each bar shows the average daily high during the same 7-day period in each year.
cooler yearstypical rangewarmer years2026 forecastcurrent forecast
From 1981 to 2025, the 5-11 Sept period averaged 24°C by day. The coolest year was 1993 (21°C) and the warmest was 1988 (31°C). The current forecast averages 24°C - close to the historical median.
Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.
Weather warnings - Porto
No active weather warnings for Porto (region: Portugal). The national weather service is not forecasting dangerous conditions.
14-day forecast - Porto
Porto 30 & 45-day weather - long-range outlook
Next 16 days · forecast
25°
around 22° at night · days with rain: 4
Weeks 3-4 · avg for September
23°
around 14° at night · rain chance 27%
Weeks 5-7 · avg for October
22°
around 14° at night · rain chance 44%
The 30 & 45-day outlook for Porto: the next 16 days are a numerical forecast updated daily - on average 25° by day and 22° at night. Further out we rely on multi-year climate averages: around 23° in September, and about 22° in October. Forecasts beyond two weeks are indicative only.
Day-by-day forecast for Porto
Saturday5 September 2026
🌧️33°light rain
Sunday6 September 2026
🌤️28°a few clouds
Monday7 September 2026
☀️22°clear sky
Tuesday8 September 2026
☁️20°broken clouds
Wednesday9 September 2026
☁️22°broken clouds
Thursday10 September 2026
☀️22°clear sky
Friday11 September 2026
☀️25°clear sky
Saturday12 September 2026
☀️27°clear sky
Sunday13 September 2026
🌤️25°scattered clouds
Monday14 September 2026
☀️24°clear sky
Tuesday15 September 2026
☀️23°clear sky
Wednesday16 September 2026
☀️23°clear sky
Thursday17 September 2026
☀️25°clear sky
Friday18 September 2026
🌤️27°a few clouds
Saturday19 September 2026
☁️26°broken clouds
Sunday20 September 2026
☁️22°overcast clouds
UV index in Porto - is it safe to sunbathe?
Today the UV index in Porto is 7 (high) - unprotected fair skin can burn in about 30 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.
Pollen in Porto - info for allergy sufferers
Today mugwort pollen is highest in Porto - about 1 grains/m³, low level. Most allergy sufferers should not feel strong symptoms. Pollen levels are a CAMS model forecast and are indicative.
Sea temperature - Porto
Water today
20°C
Week avg
19°C
Waves today
0.8 m
How's the water?
brisk
16-day sea temperature forecast:
Average sea temperature through the year:
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.
Air quality and smog in Porto
Air quality in Porto is currently good. Fine particulate PM2.5: 15.1 µg/m³, PM10: 25.6 µg/m³.
| City | PM2.5 (µg/m³) | PM10 (µg/m³) | Air quality |
|---|---|---|---|
| Porto | 15.1 | 25.6 | good |
Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-09-05, 02:00).
Porto weather through the year
Upcoming public holidays in Portugal: Republic Day — 5 October · All Saints Day — 1 November · Restoration of Independence — 1 December.
Nearby and related places
FAQ - Porto weather
What is the weather like in Porto today?
Today it is about 33° during the day and 23° at night, light rain.
How far ahead can I check the forecast for Porto?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.