June brings 28°C daytime highs, 30mm of precipitation across about 3 wet days and 14.9 hours of daylight — best for pool and terrace weather and reliable sunshine. The strongest run of the year is May to July. December is the quietest month: low-key and inexpensive, and still good for low-angle light and quiet and local.
Long-run climate normals for Coimbra. Month ratings compare months within Coimbra only — they are not a ranking of Coimbra against other destinations, and they are not a forecast for a specific year.
Conditions on this page are recalculated from the latest forecast every time it is opened, for the current date in the location's own time zone. Showing .
| Best month | June — Pool and terrace weather, Reliable sunshine |
| Best 3-month window | May–July |
| Quietest month | December — fewest visitors |
| Driest month | July — 21mm |
| Wettest month | December — 90mm |
| Warmest / coolest | July 29°C / January 14°C |
| Seasonality | Strongly seasonal — the months feel like different places |
| Annual rainfall | 675mm over roughly 107 rain days |
December gets roughly 200% more precipitation than June — 90mm against 30mm. That difference, more than temperature, is what changes how a day here feels.
Daytime highs only move 15°C across the whole year (14–29°C), so timing matters far less here than rainfall does.
June gives you 14.9 hours of daylight against just 9.1 in December — a 6-hour difference in how much you can actually fit into a day.
July is the driest month at 21mm across roughly 2 wet days, while December peaks at 90mm.
July is almost as good as June, but usually quieter and cheaper. If your dates are flexible, it is the easier trip.
Coimbra changes character completely through the year — June and December are effectively two different destinations. Pick the month that matches what you want to do, not the highest-rated one.
Ratings compare months within Coimbra, not against destinations worldwide: five stars means the best time to be here, not that Coimbra beats anywhere else. Tags describe what the conditions actually suit.
| Month | Rating | High / Low | Precipitation | Wet days | Sun | Daylight | Best for |
|---|---|---|---|---|---|---|---|
| January | ★★☆☆☆ | 14°C / 5°C | 90mm | 15 | 4h | 9.4h | Low-angle light · Quiet and local |
| February | ★★☆☆☆ | 15°C / 6°C | 78mm | 13 | 5h | 10.4h | Hiking · Cycling · Low-angle light |
| March | ★★★☆☆ | 18°C / 8°C | 66mm | 11 | 7h | 11.8h | Hiking · Cycling · Spring greenery |
| April | ★★★★★ | 22°C / 12°C | 42mm | 7 | 9h | 13.1h | Hiking · Cycling · Reliable sunshine |
| May | ★★★★★ | 25°C / 15°C | 30mm | 5 | 10h | 14.3h | Reliable sunshine |
| June | ★★★★★ | 28°C / 17°C | 30mm | 3 | 12h | 14.9h | Pool and terrace weather · Reliable sunshine |
| July | ★★★★★ | 29°C / 18°C | 21mm | 2 | 12h | 14.6h | Pool and terrace weather · Reliable sunshine |
| August | ★★★★★ | 28°C / 17°C | 30mm | 3 | 12h | 13.6h | Pool and terrace weather · Reliable sunshine |
| September | ★★★★☆ | 25°C / 15°C | 42mm | 7 | 9h | 12.2h | Reliable sunshine |
| October | ★★★☆☆ | 22°C / 12°C | 66mm | 11 | 7h | 10.9h | Hiking · Cycling · Low-angle light |
| November | ★★☆☆☆ | 18°C / 8°C | 90mm | 15 | 5h | 9.7h | Autumn colour · Low-angle light · Quiet and local |
| December | ★★☆☆☆ | 15°C / 6°C | 90mm | 15 | 4h | 9.1h | Low-angle light · Quiet and local |
| You are planning | Pick | Why |
|---|---|---|
| Sun & beach days | July | 12h daily sunshine, 29°C highs and only 2 rain days. |
| City walking & sightseeing | April | 22°C highs with 13.1h of daylight — long days without heat fatigue. |
| Photography & light | July | 12h of sun and 14.6h daylight give the widest window for golden-hour work. |
| Value & fewer crowds | August | Scores 85/100 — close to peak conditions but outside the busiest window. |
| Cooler-weather travel | February | 15°C highs and 6°C nights suit anyone who dislikes heat. |
Each month in Coimbra is described from long-run climate normals and then rated relative to the other eleven months in the same city. A five-star January in a cold destination means January is one of the best times to be there — not that it beats a Mediterranean summer.
| Factor | Weight | What it measures |
|---|---|---|
| Temperature | Described | Average daytime high and overnight low for the month, shown as measured rather than judged. |
| Precipitation | Described | Monthly millimetres and wet-day count, labelled as snow or rain/snow where temperatures make that the likely phase. |
| Sunshine & daylight | Described | Average daily sunshine hours and astronomical daylight length at mid-month, from the city’s latitude. |
| “Best for” tags | Derived | Applied only when the conditions genuinely support the activity — snow depth-friendly cold for skiing, 13–24°C and low rain risk for hiking, dark evenings at high latitude for aurora. A month with few strong use cases gets fewer tags rather than padded ones. |
| Star rating | Relative | Ranks the month against the other eleven months in the same city. Never a comparison between cities. |
Figures are long-run climate averages, not a forecast for a specific year. This city has no published month-by-month normals on file, so monthly temperatures are interpolated from its summer and winter averages and rainfall is modelled from rain-day frequency.
June is the best all-round month in Coimbra: 28°C highs, 30mm of precipitation and 14.9 hours of daylight, which suits pool and terrace weather and reliable sunshine. The strongest three-month window is May to July.
December — 15°C highs, 90mm of precipitation over roughly 15 days and 9.1 hours of daylight. It is the cheapest and least crowded time to go, and it still works for low-angle light and quiet and local.
July is the driest month at 21mm over about 2 rain days, against 90mm in December. Across the year Coimbra records around 675mm.
Yes, but the months are genuinely different trips. June suits pool and terrace weather and reliable sunshine, while December suits low-angle light and quiet and local. Pick the month that matches what you want to do.
Daylight ranges from 9.1 hours in December to 14.9 hours in June, calculated from the city's latitude.