Porto Weather
A month-by-month look at temperature, rainfall and what to pack in Porto. The annual average is 20°C high / 10°C low — hottest in August (26°C) and coldest in January (6°C).
Porto Weather at a Glance
As of 2026A quick summary of Porto's year-round climate and the best time to visit.
- Annual average
- 20° / 10°
- Best time to visit
- May, June, July
- Hottest month
- August (26°C)
- Coldest month
- January (6°C)
- Wettest month
- January (150mm)
- Driest month
- July (20mm)
As of 2026, Porto's weather averages 20°C high / 10°C low across the year, and the best time to visit for stable temperatures, rainfall and crowds is May, June, July. The hottest month is August (26°C), the coldest is January (6°C), and the wettest is January (150mm).
Best Time to Visit Porto
Ideal weather — pre-peak crowds + warm enough for Foz beach + Douro Valley green peak.
São João Festival (Jun 23-24) is THE Porto experience — streets-wide party + grilled sardines + plastic-hammer tradition. Hotels triple.
Driest + warmest. Foz beach perfect. Cellars busy + Livraria Lello queues 90+ min.
Porto Weather Month by Month
Tap any month for a detailed guide with what to wear, sunrise/sunset and air quality.
| Month | High/Low | Rain | Rainy days | Crowds | |
|---|---|---|---|---|---|
| January | 14° / 6° | 150mm | 13 | Quiet | Details → |
| February | 15° / 6° | 110mm | 12 | Quiet | Details → |
| March | 17° / 8° | 90mm | 11 | Moderate | Details → |
| April | 18° / 9° | 90mm | 11 | Busy | Details → |
| May | 20° / 11° | 80mm | 9 | Busy | Details → |
| June | 23° / 13° | 40mm | 6 | Very busy | Details → |
| July | 25° / 15° | 20mm | 3 | Very busy | Details → |
| August | 26° / 15° | 25mm | 3 | Very busy | Details → |
| September | 24° / 14° | 60mm | 6 | Very busy | Details → |
| October | 21° / 12° | 100mm | 11 | Moderate | Details → |
| November | 17° / 9° | 130mm | 12 | Quiet | Details → |
| December | 14° / 7° | 150mm | 13 | Moderate | Details → |
What to Wear in Porto by Season
Spring. Light layers + light jacket evening.
Summer. T-shirt + shorts + UV.
Autumn cool. Light coat + sweater.
Cool wet. Warm coat + waterproof.
Porto Weather FAQ
What is the best time to visit Porto? +
For weather, May, June, July are the most comfortable months. Highs sit around 20°C with relatively stable rainfall and crowds.
What are the hottest and coldest months in Porto? +
The hottest month is August with an average high of 26°C, and the coldest is January with an average low of 6°C. The annual average is 20°C high / 10°C low.
When does it rain most in Porto? +
The wettest month is January (150mm over about 13 rainy days) and the driest is July (20mm). Total annual rainfall is roughly 1045mm.
What should I pack for Porto? +
Spring (Mar–May) averages 18/9°C — Spring. Light layers + light jacket evening. Summer (Jun–Aug) averages 25/14°C — Summer. T-shirt + shorts + UV. Autumn (Sep–Nov) averages 21/12°C — Autumn cool. Light coat + sweater. Winter (Dec–Feb) averages 14/6°C — Cool wet. Warm coat + waterproof.
What is the weather in Porto this month (June)? +
June averages 23°C high / 13°C low with 40mm rainfall over about 6 rainy days. Crowds are very busy and prices are high.
Keep Planning Your Porto Trip
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.