Coimbra climate
Coimbra (Portugal) has a hot-summer Mediterranean climate (Köppen Csa). The average temperature over the year is 17 °C62 °F, and about 846 mm33 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Coimbra climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 1456 | 541 | 949 | 1084.3 |
| Feb | 1559 | 541 | 1050 | 823.2 |
| Mar | 1763 | 745 | 1254 | 933.7 |
| Apr | 2068 | 949 | 1558 | 823.2 |
| May | 2476 | 1253 | 1864 | 532.1 |
| Jun | 2984 | 1558 | 2271 | 241.0 |
| Jul | 3391 | 1661 | 2476 | 90.3 |
| Aug | 3392 | 1662 | 2577 | 140.5 |
| Sep | 3086 | 1559 | 2373 | 401.6 |
| Oct | 2475 | 1254 | 1864 | 1194.7 |
| Nov | 1762 | 846 | 1254 | 1214.8 |
| Dec | 1457 | 642 | 1050 | 1003.9 |
| Year | 3392 | 541 | 1762 | 84633 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 88% | 58% | 2.0 | 9:36 |
| Feb | 84% | 53% | 3.0 | 10:37 |
| Mar | 81% | 55% | 4.1 | 11:50 |
| Apr | 78% | 53% | 5.4 | 13:13 |
| May | 72% | 47% | 6.5 | 14:23 |
| Jun | 65% | 44% | 7.0 | 15:01 |
| Jul | 57% | 34% | 7.2 | 14:46 |
| Aug | 54% | 32% | 6.5 | 13:45 |
| Sep | 59% | 37% | 5.1 | 12:24 |
| Oct | 73% | 50% | 3.3 | 11:03 |
| Nov | 85% | 53% | 2.2 | 9:53 |
| Dec | 88% | 57% | 1.8 | 9:19 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Coimbra is like
The warmest month is August, with an average high of 33 °C92 °F and a low of 16 °C62 °F. The coldest is January, when highs average 14 °C56 °F and lows 5 °C41 °F. There is a clear seasonal cycle, with 15.6 °C28.1 °F between the average temperature of the warmest and the coolest month.
Annual precipitation is moderate at about 846 mm33 in. The wettest three-month stretch is October–December, which brings 40% of the annual total. Months with less than 20 mm0.8 in on average: July and August. The wettest month is November (121 mm4.8 in), the driest is July (9 mm0.3 in).
Relative humidity ranges from 54% in August to 88% in January. The clearest skies (lowest average cloud amount, 32%) are typical of August. Average wind speed near the ground ranges from 2 km/h (1 mph) in January to 2 km/h (1 mph) in March. Daylight lasts from about 9.3 hours in December to 15.0 hours in June.
Best time to visit Coimbra
Based on these averages, the most comfortable months for sightseeing and outdoor activities are April–June: average highs of 20 °C68 °F to 29 °C84 °F with 24 mm1.0 in to 82 mm3.2 in of precipitation per month.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Coimbra
- Winter (December–February) — highs 1456 to 15 °C59 °F, lows 541 to 6 °C42 °F, about 97 mm3.8 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an umbrella or light rain jacket.
- Spring (March–May) — highs 1763 to 24 °C76 °F, lows 745 to 12 °C53 °F, about 76 mm3.0 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 2984 to 33 °C92 °F, lows 1558 to 16 °C62 °F, about 16 mm0.6 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an extra layer for the cooler mornings and evenings.
- Autumn (September–November) — highs 1762 to 30 °C86 °F, lows 846 to 15 °C59 °F, about 94 mm3.7 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
How Coimbra compares
Compared with Porto, about 106 km to the north, Coimbra is on average 1.5 °C2.6 °F warmer and receives 16% less precipitation (846 mm33 in vs 1,009 mm40 in). The difference is largest in August (4.7 °C8.5 °F warmer).
Of the 9 places in Portugal covered by World Climates, Coimbra is the 3rd warmest by annual mean temperature and the 4th wettest by annual precipitation. See all of them on the Portugal climate page.
Places in other countries with the most similar temperature and rainfall pattern: Mascara (Algeria, Csa), Nice (France, Csa) and Toulon (France, Csa).
Nearby places
- Leiria 61 km · 16 °C61 °F · 658 mm26 in
- Viseu 67 km · 14 °C57 °F · 1,016 mm40 in
- Porto 106 km · 15 °C59 °F · 1,009 mm40 in
- Braga 150 km · 15 °C59 °F · 1,035 mm41 in
- Amadora 176 km · 15 °C60 °F · 575 mm23 in
- Lisbon 176 km · 16 °C61 °F · 541 mm21 in
- Setúbal 191 km · 17 °C63 °F · 535 mm21 in
- Badajoz 193 km · 17 °C62 °F · 544 mm21 in
Frequently asked questions
What is the warmest month in Coimbra?
August is the warmest month in Coimbra, with an average high of 33 °C (92 °F) and an average low of 16 °C (62 °F).
What is the coldest month in Coimbra?
January is the coldest month, with an average high of 14 °C (56 °F) and an average low of 5 °C (41 °F).
When does it rain the most in Coimbra?
November is the wettest month with about 121 mm (4.8 in) of precipitation; July is the driest with about 9 mm (0.3 in).
What is the best time to visit Coimbra?
Judging by long-term averages, the most comfortable months are April–June.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 425 m, while Coimbra lies at about 59 m. Temperatures on this page were therefore adjusted by +2.4 °C4.3 °F using the standard lapse rate of 6.5 °C per 1,000 m.