yearsofweather

Porto in October:
warm, frequent rain

Porto, Portugal · Records from 2006 to 2025. Not a forecast.

Mean high22°Hottest day 32.2° (2017)
Mean low14°Coldest night 6° (2012)
Rain days11 days2-19 by year
Rainfall142mmDaylight 11.8 → 10.5 h
Porto's 12 months iBest: June to August
Trip types Beach Poorcool seaSightseeing on foot Finemild
Sea temperature17°15.3-20.1° by year (last 6)
Sunrise / sunset (15th)07:45 / 18:55Daylight 11.8 → 10.5 h

Porto in October

Autumn rain returns, and wet days increase sharply, making the weather unreliable. The sun sets earlier, so evenings get dark soon. An indoor plan such as a cellar tasting is a good backup.

Daytime highs averaged 22°C, with nights at 14°C. Comfortably warm without being punishing. About 11 days a month saw rain, enough that a wet-weather plan was worth having. A visitor in 2007 met 2 rain days; one in 2006 met 19. The average of 11 hid that gap.

September averaged 6 rain days; October jumped to 11. The wet season tended to start here. October 2017 averaged 25.1°C by day, 2.9°C above the 20-year mean.

Hurricanes i No tropical storm passed within 300 km in this month over the last 20 years. Hurricanes: September

Date by date i

‹ September October 2026 November ›
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
1-3rain on 25% of days24° 15°
4-10rain on 22% of days24° 14°
11-17rain on 36% of days23° 14°
18-24rain on 48% of days21° 13°
25-31rain on 42% of days21° 13°

0-5/206-8/209-11/2012-20/20

1-3rain on 25% of days24° 15°
4-10rain on 22% of days24° 14°
11-17rain on 36% of days23° 14°
18-24rain on 48% of days21° 13°
25-31rain on 42% of days21° 13°
Tap another date to change

20062mm
2007none
20081mm
2009none
2010none
2011none
201235mm
2013none
20148mm
20153mm
20163mm
201721mm
20183mm
20199mm
2020none
20214mm
2022none
202334mm
20242mm
2025none
Holidays in October (2026)
  • October 5 Republic Day
  • October 12 Columbus Day

1 Local public holiday or break (busier, pricier)1 US holidays (flights fill up)

Day by day temperature i

11°19°26°34° 1815222931

Mean high Mean low Coldest to warmest high in 20 years

Your trip dates, the past 20 years

Trip dates ~

You can also click two dates on the axis. Hover a cell to see that day's rain.
Trip rain days Month rain days
2006
4 d 19 d
2007
0 d 2 d
2008
1 d 7 d
2009
4 d 10 d
2010
4 d 8 d
2011
0 d 6 d
2012
3 d 15 d
2013
0 d 16 d
2014
3 d 9 d
2015
4 d 14 d
2016
0 d 11 d
2017
0 d 5 d
2018
0 d 9 d
2019
0 d 9 d
2020
1 d 12 d
2021
1 d 9 d
2022
1 d 15 d
2023
0 d 18 d
2024
5 d 18 d
2025
0 d 10 d
Years with rain
Tap a date to start, tap another to end. Each cell is that date in one year.
'06'07'08'09'10'11'12'13'14'15'16'17'18'19'20'21'22'23'24'25
of 20
4
6
5
4
4
6
6
4
3
4
6
5
6
4
6
11
12
11
10
9
9
9
8
11
11
8
6
8
8
7
11
Rain days on trip
40144030340000111050

No rain1-9 mm10 mm or more Dates outside your trip are dimmed.

One row per year, one cell per day. 2007 had 2 rain days, 2006 had 19.

Porto through the year

MonthHighLowRain daysRainfallSea
January 14°7°12 days148mm 14°
February 16°7°11 days118mm 14°
March 17°9°11 days110mm 14°
April 19°11°10 days100mm 15°
May 21°12°8 days69mm 16°
JuneGood 23°15°6 days39mm 17°
JulyGood 26°16°2 days12mm 17°
AugustGood 26°16°2 days11mm 17°
September 25°15°6 days67mm 17°
October 22°14°11 days142mm 17°
November 17°10°13 days172mm 17°
December 15°8°13 days144mm 15°

Common questions

Does it rain a lot in Porto in October?

Over the past 20 years October averaged 11 rain days (1 mm or more) out of 31. Individual years ran from 2 in the driest to 19 in the wettest.

What should I wear in Porto in October?

Days averaged 22°C and nights 14°C. Pack a compact umbrella, a waterproof jacket, a light layer for the evenings, and T-shirts.

Can you swim in Porto in October?

Sea surface temperature averaged 17°C in October, too cold for most people without a wetsuit. Year to year it ranged 15.3-20.1°C. Check local flags for waves and jellyfish on the day.

Is October a good time to visit Porto?

On warmth and rain days alone, Porto's easiest months were June to August. October ranked 6 of 12.