Best Time to Visit Porto: Weather Month by Month

Q: What is the best time to visit Porto?

August is the best month with 24.0°C highs, 16.0°C lows, 9.5h of sunshine and 10.0% rainy days. The months of August & July offer comparable conditions.

Q: How many hours of sunshine does Porto get in August?

Porto averages 9.5 sunshine hours per day in August. It is the sunniest month with a climate score of 8.4/10.

Q: What is the rainiest month in Porto?

January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.

Q: What are the temperatures at night in Porto in August?

In August, overnight lows reach 16.0°C, while afternoon highs average 24.0°C.

Q: Is Porto good in winter?

In winter (December-February), Porto scores 4.0/10 on average — Difficult period — prefer the peak season.. The best month overall remains August with a score of 8.4/10.

Q: When should you avoid Porto?

January is the most difficult month to visit Porto, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.

Decide

When to visit Porto?

The decision rests on several criteria. Climate score, tourist crowds and feasible activities.

Verdict: In Porto, August and July clearly stand out. December concentrates the least favourable conditions.

Top & avoid

🏆 August · 8.8 July · 8.7 June · 8.2 September · 8.1 ⚠️ December · 4.1

4.2

Jan

4.3

Feb

4.4

Mar

4.6

Apr

7.8

May

8.2

Jun

8.7

Jul

8.8

Aug

8.1

Sep

7.4

Oct

4.3

Nov

4.1

Dec

Best period · ≥ 7 Decent period · 4 – 7 Tough conditions · < 4

What you grasp in 5 seconds

Porto offers 6 comfortable months, without any month really to avoid. The gap stays moderate: 8.8 in August vs 4.1 in December.

What to check next

Your tolerance for crowds and budget. The best months concentrate tourist saturation and higher prices. Shoulder seasons offer a good compromise.

Next action

Scroll down to the detailed table to compare month by month, then open the page of the month that interests you.

Compare the 12 months By your project

How we calculate the score

The score combines 4 weighted criteria using 10 years of real climate data (ERA5).

Source : ERA5 · Open-Meteo · 10 years (2016–2025) · Full methodology →

Understand

Compare all 12 months

Month-by-month details: temperature, rain, sunshine, score and verdict.

✅ 6 comfortable months (May · Jun · Jul · Aug · Sep · Oct)

Month	T° min	T° max	Rain %	mm/day	Sun	Score	Verdict
🌥️ January →	7°C	14°C	41%	5.9mm	4.0h	4.2/10	Decent period
🌥️ February →	8°C	15°C	35%	4.4mm	4.6h	4.3/10	Decent period
🌥️ March →	9°C	15°C	32%	5.2mm	6.2h	4.4/10	Decent period
🌥️ April →	11°C	17°C	35%	4.9mm	7.2h	4.6/10	Decent period
☀️ May →	13°C	20°C	29%	2.6mm	8.3h	7.8/10	Best period
☀️ June →	15°C	21°C	16%	1.6mm	9.1h	8.2/10	Best period
☀️ July →	16°C	23°C	10%	0.4mm	9.9h	8.7/10	Best period
☀️ August →	16°C	24°C	10%	0.4mm	9.5h	8.8/10	Best period
☀️ September →	16°C	22°C	19%	2.2mm	7.5h	8.1/10	Best period
⛅ October →	14°C	20°C	36%	5.8mm	5.9h	7.4/10	Best period
🌥️ November →	10°C	16°C	43%	6.5mm	4.6h	4.3/10	Decent period
🌥️ December →	9°C	14°C	40%	6.3mm	4.0h	4.1/10	Decent period

🌥️ January

4.2/10

T°7°C / 14°C

Rain %41%

Sun4.0h

Decent period

🌥️ February

4.3/10

T°8°C / 15°C

Rain %35%

Sun4.6h

Decent period

🌥️ March

4.4/10

T°9°C / 15°C

Rain %32%

Decent period

Rain %35%

Decent period

Rain %29%

Best period

Rain %16%

Best period

Rain %10%

Best period

Rain %10%

Best period

Rain %19%

Best period

Rain %36%

Best period

Rain %43%

Decent period

T°9°C / 14°C

Rain %40%

Sun4.0h

Decent period

📊 Quick read

Optimal window

May → Oct

Good transition

Apr · Nov

Tough period

none

🌡️ Detailed conditions (August)

🌡️ Feel

Comfortable

☀️ UV

7.2 · Moderate-Strong

💧 Humidity feel

16°C · Pleasant

☔ Rain

10% · 0.4 mm/day

🌅 Sunshine

9.5h/day

Week by week

Porto week by week: your odds of avoiding rain

For each week of the year: in how many years out of 10 it was mostly dry (at most 2 rainy days), 2016 to 2025.

Safest week: Aug 20 to Aug 26, mostly dry in 10 years out of 10 (0.2 rainy day(s) on average).

Most exposed: Oct 15 to Oct 21, mostly dry in 1 years out of 10 (4.1 rainy days on average).

Number = years out of 10 with at most 2 rainy days in the week. Source: ERA5 reanalysis (ECMWF) via Open-Meteo, daily data 2016-2025. Rainy day = at least 1 mm, as everywhere on the site.
Jan	Jan 14/1013°C	Jan 85/1013°C	Jan 154/1013°C	Jan 224/1014°C	Jan 296/1015°C
Feb	Feb 54/1014°C	Feb 123/1015°C	Feb 197/1016°C	Feb 264/1014°C
Mar	Mar 54/1015°C	Mar 128/1016°C	Mar 198/1016°C	Mar 267/1017°C
Apr	Apr 24/1017°C	Apr 94/1017°C	Apr 165/1019°C	Apr 236/1018°C	Apr 305/1019°C
May	May 74/1019°C	May 147/1020°C	May 219/1021°C	May 288/1022°C
Jun	Jun 47/1021°C	Jun 119/1022°C	Jun 187/1023°C	Jun 2510/1022°C
Jul	Jul 28/1024°C	Jul 99/1025°C	Jul 1610/1024°C	Jul 239/1025°C	Jul 3010/1025°C
Aug	Aug 69/1025°C	Aug 139/1024°C	Aug 2010/1026°C	Aug 279/1024°C
Sep	Sep 36/1024°C	Sep 107/1024°C	Sep 178/1022°C	Sep 248/1022°C
Oct	Oct 17/1022°C	Oct 87/1022°C	Oct 151/1020°C	Oct 225/1020°C	Oct 293/1018°C
Nov	Nov 54/1017°C	Nov 126/1017°C	Nov 194/1016°C	Nov 267/1015°C
Dec	Dec 35/1015°C	Dec 105/1014°C	Dec 173/1014°C	Dec 245/1014°C

A specific date? The app computes the same figure day by day.

10-year trend

Annual temperatures — Porto

Min/max temperature curves observed over the past 10 years (ERA5). Shows climate stability and trend.

Tailor

For your trip

A few angles depending on what kind of trip you are planning.

🏖️ Beaches: Jun-Sept🌊 Swell: Sept-Mar🚤 Water activities

Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

🏨

Stay

Hotels & rentals · Porto

Expedia →

🎟️

Activities

Tours, tickets, experiences

See ↓

✈️

Flights

Multi-airline comparator

Kiwi →

🎟️ Activities & tours · Porto

GetYourGuide selection · free cancellation

See all →

Affiliate link · GetYourGuide

Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach holiday.

Country · Portugal

🗣️LanguagePortuguese

💶CurrencyEuro (€)

🚗DrivingRight-hand

🛡️Safety ⓘVery safe · 1/5

💰Cost of living ⓘCheap · 2/5

🌡️ Climate

🌍Climate typeTemperate oceanic

📈Climate trend ⓘStable

🔥Hottest monthAugust · 24°C

❄️Coolest monthJanuary · 14°C

🌧️Rainiest month ⓘNovember · 43%

🏖️ Beach holiday

📅Peak seasonJuin → Sept

🏖️Swell (Sept–Mar) ⓘModérée

🛂VisaSchengen · 90 days

Explore

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Alentejo · Portugal294 km →

Guides & rankings

World ranking 2026See →

Best summer destinationsSee →

Winter sunSee →

Where to go in JulySee →

🗺️ Climate map of 754 destinations

Location

Where is Porto ?

Global position + regional geographic context.

🌍 World

🔍 Geographic context

Temperate oceanic climate with a 8.8 → 4.1 gap between best and worst month. 10 years of ERA5 data to choose by project.

41.15°N · 8.61°W

Questions

Frequently asked questions

What is the best time to visit Porto?

August is the best month with 24.0°C highs, 16.0°C lows, 9.5h of sunshine and 10.0% rainy days. The months of August & July offer comparable conditions.

How many hours of sunshine does Porto get in August?

Porto averages 9.5 sunshine hours per day in August. It is the sunniest month with a climate score of 8.4/10.

What is the rainiest month in Porto?

January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.

What are the temperatures at night in Porto in August?

In August, overnight lows reach 16.0°C, while afternoon highs average 24.0°C.

Is Porto good in winter?

In winter (December-February), Porto scores 4.0/10 on average — Difficult period — prefer the peak season.. The best month overall remains August with a score of 8.4/10.

When should you avoid Porto?

January is the most difficult month to visit Porto, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.