Winter
Dec → Feb13 to 15°
nights 7 to 9°
- 12 rainy days · 155 mm
- 7 h of sun
- sea 14°
When is the best time to visit Porto?
- Jan13°not recommended
- Feb15°not recommended
- Mar16°not recommended
- Apr18°fair
- May20°recommended
- Jun22°recommended
- Jul24°fair
- Aug25°fair
- Sep23°recommended
- Oct21°recommended
- Nov17°fair
- Dec15°not recommended
RecommendedFairNot recommended· afternoon temperature
The weather in Porto, month by month
The table of records, month by month
| Month | High | Low | Sunshine | Rainfall | Rainy days | Sea | Best |
|---|---|---|---|---|---|---|---|
| January | 13° | 7° | 6.6 h | 162 mm | 12 d | 14° | |
| February | 15° | 8° | 7.9 h | 120 mm | 10 d | 14° | |
| March | 16° | 9° | 9 h | 146 mm | 13 d | 14° | |
| April | 18° | 10° | 10.7 h | 135 mm | 12 d | 16° | |
| May | 20° | 13° | 11.8 h | 85 mm | 9 d | 16° | ✓ |
| June | 22° | 15° | 13 h | 50 mm | 8 d | 18° | ✓ |
| July | 24° | 17° | 13.4 h | 13 mm | 3 d | 17° | |
| August | 25° | 17° | 12.1 h | 14 mm | 3 d | 17° | |
| September | 23° | 16° | 10.8 h | 68 mm | 6 d | 17° | ✓ |
| October | 21° | 14° | 8.1 h | 183 mm | 13 d | 19° | ✓ |
| November | 17° | 11° | 6.8 h | 167 mm | 14 d | 17° | |
| December | 15° | 9° | 6.4 h | 182 mm | 14 d | 15° |
The four seasons in Porto, in figures
What the 2015-2024 records (Livraria Lello) show, season by season, to compare at a glance instead of reading twelve rows of a table.
Spring
Mar → May16 to 20°
nights 9 to 13°
- 11 rainy days · 122 mm
- 10.5 h of sun
- sea 15°
Summer
Jun → Aug22 to 25°
nights 15 to 17°
- 5 rainy days · 26 mm
- 12.8 h of sun
- sea 17°
Autumn
Sep → Nov17 to 23°
nights 11 to 16°
- 11 rainy days · 139 mm
- 8.6 h of sun
- sea 18°
Book early for May to June and September to October
The timing is right, so it is right for everyone: in these months the best places to stay and the small-group tours go first. Here is where to start.
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Daylight in Porto, month by month
The time between sunrise and sunset, from shortest to longest. Not to be confused with the sunshine hours in the table above, which count clear skies. In June there are 15h07 of daylight, in December 9h13, a difference of 5h54.
9h31Jan
10h34Feb
11h49Mar
13h16Apr
14h28May
15h07Jun
14h51Jul
13h48Aug
12h24Sep
11h01Oct
9h49Nov
9h13Dec
Calculated for the latitude of the reference point "Livraria Lello" (41.15°). Values on the 15th of each month, local solar time.
What to do in Porto, month by month
EventsSão JoãoJuneNOS Primavera SoundJuneDouro grape harvestSeptember to OctoberDetails ↓
favourablewith compromisesunfavourable
- Sightseeing & walks: January, February, April, May, June, July, August, September
- Long days: May, June, July
Grid derived from the records (temperature, rainfall, sea), not from an opinion.
What's on in Porto, month by month?
What comes back every year, and when. One of these events fills the hotels and pushes prices up: something to aim for or to avoid, depending on what you want.
- JuneSão João big crowds
The whole city takes to the streets on St John's Night, plastic hammers tapping heads and sardines grilling everywhere.
- JuneNOS Primavera Sound
Parque da Cidade hosts three days of concerts in early June, the Portuguese edition of the Barcelona festival.
- September to OctoberDouro grape harvest
The quintas of the Douro Valley bring in the grapes, and some open their lagares to visitors who want to tread.
Travelling off-peak
Month by month, in detail
January
Not recommended13°7° at night
- 162 mm · 12 d
- 6.6 h
- sea 14°
Low season, lower prices
February
Not recommended15°8° at night
- 120 mm · 10 d
- 7.9 h
- sea 14°
Low season, lower prices
March
Not recommended16°9° at night
- 146 mm · 13 d
- 9 h
- sea 14°
Low season, lower prices
April
Fair18°10° at night
- 135 mm · 12 d
- 10.7 h
- sea 16°
Low season, lower prices
May
Recommended20°13° at night
- 85 mm · 9 d
- 11.8 h
- sea 16°
Busy, without the crush
June
Recommended22°15° at night
- 50 mm · 8 d
- 13 h
- sea 18°
High season, book early
July
Fair24°17° at night
- 13 mm · 3 d
- 13.4 h
- sea 17°
Busy, without the crush
August
Fair25°17° at night
- 14 mm · 3 d
- 12.1 h
- sea 17°
Busy, without the crush
September
Recommended23°16° at night
- 68 mm · 6 d
- 10.8 h
- sea 17°
Busy, without the crush
October
Recommended21°14° at night
- 183 mm · 13 d
- 8.1 h
- sea 19°
Busy, without the crush
November
Fair17°11° at night
- 167 mm · 14 d
- 6.8 h
- sea 17°
Low season, lower prices
December
Not recommended15°9° at night
- 182 mm · 14 d
- 6.4 h
- sea 15°
Quiet, then the holidays
Read the twelve months in detail
January. Cool: 13 °C at best, 7 °C at night. Expect 12 days of rain in the month (162 mm). Expect 6.6 h of sunshine a day. Sea at 14 °C, too cold to swim. Low season: fewer people, lower prices.
February. Cool: 15 °C at best, 8 °C at night. Expect 10 days of rain in the month (120 mm). Expect 7.9 h of sunshine a day. Sea at 14 °C, too cold to swim. Low season: fewer people, lower prices.
March. Cool: 16 °C at best, 9 °C at night. Expect 13 days of rain in the month (146 mm). Plenty of sunshine: 9 h a day on average. Sea at 14 °C, too cold to swim. Low season: fewer people, lower prices.
April. Mild, 18 °C in the afternoon and 10 °C early in the morning. Expect 12 days of rain in the month (135 mm). Plenty of sunshine: 10.7 h a day on average. Sea at 16 °C, too cold to swim. Low season: fewer people, lower prices.
May. Mild, 20 °C in the afternoon and 13 °C early in the morning. Expect 9 days of rain in the month (85 mm). Plenty of sunshine: 11.8 h a day on average. Sea at 16 °C, too cold to swim. Busy season, without the crush.
June. Mild, 22 °C in the afternoon and 15 °C early in the morning. Expect 8 days of rain in the month (50 mm). Plenty of sunshine: 13 h a day on average. Cool sea (18 °C), for the brave. High season: book early.
July. Mild, 24 °C in the afternoon and 17 °C early in the morning. Hardly any rain (13 mm over 3 days). Plenty of sunshine: 13.4 h a day on average. Sea at 17 °C, too cold to swim. Busy season, without the crush.
August. 25 °C in the afternoon and 17 °C at night. Hardly any rain (14 mm over 3 days). Plenty of sunshine: 12.1 h a day on average. Sea at 17 °C, too cold to swim. Busy season, without the crush.
September. Mild, 23 °C in the afternoon and 16 °C early in the morning. Rain stays light: 68 mm over 6 days. Plenty of sunshine: 10.8 h a day on average. Sea at 17 °C, too cold to swim. Busy season, without the crush.
October. Mild, 21 °C in the afternoon and 14 °C early in the morning. Expect 13 days of rain in the month (183 mm). Expect 8.1 h of sunshine a day. Cool sea (19 °C), for the brave. Busy season, without the crush.
November. Cool: 17 °C at best, 11 °C at night. Frequent rain: 167 mm over 14 days. Expect 6.8 h of sunshine a day. Sea at 17 °C, too cold to swim. Low season: fewer people, lower prices.
December. Cool: 15 °C at best, 9 °C at night. A very wet month, 182 mm of rain over 14 days. Expect 6.4 h of sunshine a day. Sea at 15 °C, too cold to swim. Quiet at the start of the month, then busier as the holidays approach.
Same season, other ideas
Their best time overlaps with this one: worth comparing before you book.
Frequently asked questions
When is the best time to visit Porto?
May to June and September to October: over these months, recorded highs range from 20 to 23 °C, with 9 days of rain a month on average (2015-2024 records, Livraria Lello).
Which month should you avoid in Porto?
December: it is the wettest of the months to avoid, with 182 mm over 14 days of rain on average, according to 2015-2024 records at the reference point (Livraria Lello).
What is the hottest month in Porto?
August, with 25 °C on average in the afternoon and 17 °C at night. 2015-2024 records (Livraria Lello).
What is the coldest month in Porto?
January, with 13 °C at best during the day and 7 °C at night. 2015-2024 records (Livraria Lello).
What is the driest month in Porto?
July: 13 mm over 3 days of rain, against 183 mm in October, the wettest month.
Which month has the most sunshine in Porto?
July, with 13.4 h of sunshine a day on average. Note that this counts clear skies, not the length of the day.
When can you swim in Porto?
The water stays cool all year (warmest 19 °C in October, measured in 2023-2024 on the nearest coast, Livraria Lello): swimming is for the brave.
Plan this trip
📒 The free printable Porto guide: itinerary, map, where to sleep→
🧭 When to visit Portugal: the country overview→
🗓️ Best time to visit: all our destinations→
Compare with other destinations
Photos: Huy Phan / Pexels · Mehmet Turgut Kirkgoz / Pexels · Christian David / CC BY-SA 4.0 (Wikimedia Commons) · Vadym Alyekseyenko / Pexels · Julio García Photos / Pexels