Climate and monthly weather forecast
Coimbra, Portugal

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The climate of Coimbra

Known for its enchanting university town and historic structures, Coimbra nestles within the climatic zone denoted by the Köppen climate classification as 'Csb', indicating a Mediterranean climate with warm summers. Influenced by its geographical position along Portugal's western coast, Coimbra experiences weather characterized by hot, dry summers and wet, temperate winters.

Evaluating the provided climate data, there is a noticeable temperature variation ranging from average lows of 5°C (41°F) in the coldest months to a zenith of 28.7°C (83.7°F) in the heat of summer. The city receives a generous amount of sunlight with daylight hours ranging from a low of 9.4 hours in the winter months to a peak of 15 hours during the summer. The average UV index fluctuates between 2 in the colder seasons and escalates to 9 in the summer months, indicating strong sun intensity.

Rainfall in Coimbra is rather seasonal with the dry summer months often receiving less than 50mm (1.97") per month, while the wet winters can see monthly rainfall over 100mm (3.94") regularly. Observing the rain day frequency, the trend closely follows the rainfall pattern with fewer rainy days from June to September and increasing frequencies as it transitions into winter.

Remarkably, the driest month, July, has an average of 6 rainy days with a precipitation total of just 13mm (0.51"), while in December, the number of rain days doubles to 14 and the average precipitation jumps to 127mm (5").

The best time to visit Coimbra

The summer months of June to September are often perceived as the most opportune time to visit Coimbra. During this period, the city basks in temperature highs up to 28.7°C (83.7°F), creating ideal conditions for outdoor exploration. The rainfall is sparse, with averages as low as 13mm (0.51") to 40mm (1.57") from June to September, ensuring minimal interruption to sightseeing plans. At this time, daylight hours are at their peak, offering up to 15 hours of daylight, thus providing longer exploration times for visitors.

The worst time to visit Coimbra

The late fall to winter period, from November to February, might be less inviting for tourists considering a visit to Coimbra. At this time, the city receives hefty rainfall, ranging from 106mm (4.17") in November to a significant 127mm (5") in December. Lower temperatures, ranging between 5°C (41°F) and 16.2°C (61.2°F) occur during this period, which may not be favorable for outdoor activities.

Spring weather in Coimbra

Spring in Coimbra, from March to May, welcomes mild temperatures, with highs varying from 18.9°C (66°F) to 22.4°C (72.3°F). The rainfall decreases dramatically from spring's inception, going from 66mm (2.6") in March down to 40mm (1.57"), heralding the onset of the dry season in May. During these months, daylight ranges from 12 hours in March to 14.4 hours in May.

Summer weather in Coimbra

Summers in Coimbra, spanning June to August, are marked by warmth and long sunshine-filled days. Daytime temperatures range between 26.2°C (79.2°F) to a peak of 28.7°C (83.7°F) in August. The seasonal rainfall is scarce, dipping down to a low of 13mm (0.51") in July. The duration of daylight extends from 14.7 hours in June and July to 13.7 hours by the end of summer in August.

Autumn weather in Coimbra

Autumn in Coimbra extends from September to November and brings a gradual drop in temperatures from 27.3°C (81.1°F) to 18°C (64.4°F). Rainfall starts to increase during this phase, advancing from a moderate 52mm (2.05") in September to 109mm (4.29") by November. Daylight duration gradually reduces to 11.1 hours in November.

Winter weather in Coimbra

Winter descends on Coimbra between December and February with temperature lows of 5°C (41°F) to 6.5°C (43.7°F) and highs from 14.8°C (58.6°F) to 16.2°C (61.2°F). The city receives the bulk of its annual precipitation during this period, witnessing rain totals from 106mm (4.17") to 127mm (5"). The daylight hours are considerably fewer, ranging from 9.4 hours to 10 hours. Yet despite the reduced sunshine hours and cold weather, the city retains its charm with festive winter celebrations around the historical sites.

Weather in January

The first month of the year in Coimbra, Portugal, begins with mild daytime temperatures and cooler nights. Rain frequently marks the January weather, as evidenced by the highest recorded rainfall of 112mm (4.41"). This winter month also sees limited daylight hours and relatively low UV index ratings with shorter spans of sunshine. Weather in January »

Weather in February

As winter transitions into early spring, February in Coimbra brings a subtle increase in warmth during the day. However, the month continues to experience an ample amount of rain with 106mm (4.17") recorded on average, marginally lesser than January. Weather in February »

Weather in March

The harmonious balance of wet and dry conditions characterizes March weather in Coimbra. A significant drop in rainfall to 66mm (2.6") indicates the approach of drier seasons, making March a potential threshold for the change in weather pattern. Weather in March »

Weather in April

Coimbra embraces the full bloom of spring during April, indicated by warmer days and slightly increased rainfall to 85mm (3.35") compared to March. There's a noticeable shift in daylight duration with extended sunlit hours and a rise in UV index ratings. Weather in April »

Weather in May

May in Coimbra ushers in a distinctly warmer and sunnier phase of the year. Rainfall decreases considerably, making room for more sun-bathing hours and a higher UV index. Unquestionably, the weather in May reflects the commencement of summer, painting the city in vivid, sun-drenched hues. Weather in May »

Weather in June

The arrival of June marks the beginning of a beautiful summer in Coimbra. Day temperatures peak as nights become comfortably warm, painting the perfect summer picture. The city stays predominantly dry with just 40mm (1.57") of rainfall, the lowest across all months. Weather in June »

Weather in July

The warmth in Coimbra continues to soar in July as it embraces the peak of summer. True to the season, the city continues to remain relatively dry and sees a further reduction in rainfall. With the maximum UV index rating and the highest daylight hours, July stands as the sunniest period of the year in Coimbra. Weather in July »

Weather in August

The concluding month of summer, August, maintains the trend of high temperatures in Coimbra while marginally cooling down from its July peak. Interestingly, the city sees a nearly equal amount of rainfall as it did in July, that is 14mm (0.55"). Weather in August »

Weather in September

Embracing the arrival of autumn, September brings a subtle decrease in temperature, making the days and nights in Coimbra more comfortable. The rainfall level rises again to 52mm (2.05"), signaling the end of dry summer months. Weather in September »

Weather in October

October in Coimbra signifies a clear transition from summer to autumn as the fall season takes over. The rainfall is more pronounced this month, nearly doubling from the preceding month to 103mm (4.06"). However, the decrease in temperature makes it a comfortable month to enjoy the autumn landscape of the city. Weather in October »

Weather in November

November brings forth a significant change in Coimbra's weather as the winter chill begins to set in. An increase in rainfall, reaching 109mm (4.29") on average, marks this shift to the wetter season. Daylight hours shrink further and the UV index drops to moderate levels. Weather in November »

Weather in December

As the final month of the year, December brings the winter season in full swing in Coimbra. The combination of lower temperatures and the highest rainfall of 127mm (5") gives the city a cool and damp atmosphere. With shortened daylight hours and a low UV index, December experiences less sunshine compared to other months. Weather in December »
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Frequently asked questions

What month is the coldest in Coimbra?

January stands out as Coimbra's coldest month, with an average high-temperature of 14.8°C (58.6°F) and a low-temperature of 5°C (41°F).

How much does it rain in Coimbra?

Throughout the year, there are 145 rainfall days, and 905mm (35.63") of precipitation is accumulated.

What is the month with the least sunshine in Coimbra?

January and December, with an average of 4.5h of sunshine, are months with the least sunshine in Coimbra.

What is the month with the lowest UV index in Coimbra?

The months with the lowest UV index are January, November and December, with an average maximum UV index of 2.

When are the longest days in Coimbra?

The month with the longest days in Coimbra is June, with an average of 15h and 0min of daylight.

What are the months with the highest UV index in Coimbra?

The months with the highest UV index are June and July, with an average maximum UV index of 9.

What is the driest month in Coimbra?

The month with the least rainfall in Coimbra is July, when the rain falls for 6 days and typically collects 13mm (0.51") of precipitation.

What are the months with the most sunshine in Coimbra?

The months with the most sunshine in Coimbra are July and August, with an average of 9.7h of sunshine.

What part of the year is the hottest in Coimbra?

August, characterized by an average high temperature of 28.7°C (83.7°F) and a low temperature of 15.1°C (59.2°F), is generally the warmest month in Coimbra.

When is Daylight Saving Time (DST) in Coimbra?

On Sunday, 27. October 2024, at 02:00, Daylight Saving Time ends in Coimbra, and the time zone changes from WEST to WET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 01:00, and the time zone reverts from WET to WEST.

What is the wettest month in Coimbra?

December is the month with the most rainfall in Coimbra. Rain falls for 14 days and accumulates 127mm (5") of precipitation.

What is the month with the shortest days in Coimbra?

With an average of 9h and 24min of daylight, December has the shortest days of the year in Coimbra.

Average temperature
Coimbra, Portugal

Average temperature - Coimbra, Portugal

The warmest month (with the highest average high temperature) is August (28.7°C).
The month with the lowest average high temperature is January (14.8°C).

The month with the highest average low temperature is July (15.6°C).
The coldest month (with the lowest average low temperature) is January (5°C).

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Average rainfall
Coimbra, Portugal

Average rainfall - Coimbra, Portugal

The wettest month (with the highest rainfall) is December (126.8mm).
The driest month (with the least rainfall) is July (12.8mm).

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Average rainfall days
Coimbra, Portugal

Average rainfall days - Coimbra, Portugal

The month with the highest number of rainy days is January (17 days).
The month with the least rainy days is August (5 days).

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Average daylight / Average sunshine
Coimbra, Portugal

Average daylight / Average sunshine - Coimbra, Portugal

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The months with the least sunshine are January and December (Average sunshine: 4h and 30min).

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Average UV index
Coimbra, Portugal

Average UV index - Coimbra, Portugal

The months with the highest UV index are June and July (UV index 9).
The months with the lowest UV index are January, November and December (UV index 2).

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Coimbra, Portugal

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