Best time to visit Aveiro
The best time to visit Aveiro is May–September, judged on twenty years of weather records and the events worth going for.
Aveiro, Aveiro, Portugal
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | 13.7 °C / 57 °F | 8.6 °C / 47 °F | 126 mm / 4.9 in | neither best nor good |
| February | 14.7 °C / 58 °F | 8.9 °C / 48 °F | 99 mm / 3.9 in | good month |
| March | 16 °C / 61 °F | 10.1 °C / 50 °F | 102 mm / 4 in | good month |
| April | 17.9 °C / 64 °F | 11.8 °C / 53 °F | 101 mm / 4 in | good month |
| May | 20 °C / 68 °F | 13.7 °C / 57 °F | 63 mm / 2.5 in | best month |
| June | 22.1 °C / 72 °F | 15.8 °C / 60 °F | 33 mm / 1.3 in | best month |
| July | 24 °C / 75 °F | 17 °C / 63 °F | 10 mm / 0.4 in | best month |
| August | 24.4 °C / 76 °F | 17.1 °C / 63 °F | 10 mm / 0.4 in | best month |
| September | 23.3 °C / 74 °F | 16.5 °C / 62 °F | 51 mm / 2 in | best month |
| October | 20.9 °C / 70 °F | 14.9 °C / 59 °F | 145 mm / 5.7 in | good month |
| November | 16.6 °C / 62 °F | 11.6 °C / 53 °F | 150 mm / 5.9 in | neither best nor good |
| December | 14.5 °C / 58 °F | 9.6 °C / 49 °F | 136 mm / 5.3 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: good
- MMarch: good
- AApril: good
- MMay: best
- JJune: best
- JJuly: best
- AAugust: best
- SSeptember: best
- OOctober: good
- NNovember: neither
- DDecember: neither
- Best
- May–September
- Good
- February–April, October
Why these months
February · good
In its favour: share of daylight that is sunny 79%, precipitation 99 mm / 3.9 in, average daily high 14.7 °C / 58 °F, wet days 10.4 days, days with heavy rain 3.7 days, average daily low 8.9 °C / 48 °F.
Against: feels like (high) 12.1 °C / 54 °F, relative humidity 77%.
March · good
In its favour: share of daylight that is sunny 81%, feels like (high) 13.9 °C / 57 °F, average daily high 16 °C / 61 °F, precipitation 102 mm / 4 in, average daily low 10.1 °C / 50 °F, days with heavy rain 3.9 days, wet days 11.3 days, relative humidity 75%.
April · good
In its favour: feels like (high) 16.9 °C / 62 °F, share of daylight that is sunny 85%, average daily high 17.9 °C / 64 °F, precipitation 101 mm / 4 in, average daily low 11.8 °C / 53 °F, wet days 10.4 days, days with heavy rain 4 days, relative humidity 76%.
May · best
In its favour: feels like (high) 19.8 °C / 68 °F, average daily high 20 °C / 68 °F, share of daylight that is sunny 87%, precipitation 63 mm / 2.5 in, days with heavy rain 2 days, wet days 8.7 days, average daily low 13.7 °C / 57 °F, relative humidity 75%.
June · best
In its favour: feels like (high) 22.6 °C / 73 °F, average daily high 22.1 °C / 72 °F, precipitation 33 mm / 1.3 in, share of daylight that is sunny 90%, wet days 5.9 days, days with heavy rain 1 days, average daily low 15.8 °C / 60 °F.
Against: relative humidity 77%.
July · best
In its favour: feels like (high) 24.9 °C / 77 °F, average daily high 24 °C / 75 °F, precipitation 10 mm / 0.4 in, share of daylight that is sunny 92%, wet days 2.2 days, days with heavy rain 0.2 days, average daily low 17 °C / 63 °F, relative humidity 76%.
August · best
In its favour: feels like (high) 25.2 °C / 77 °F, average daily high 24.4 °C / 76 °F, precipitation 10 mm / 0.4 in, share of daylight that is sunny 92%, wet days 2.3 days, days with heavy rain 0.1 days, average daily low 17.1 °C / 63 °F, relative humidity 76%.
September · best
In its favour: feels like (high) 23.7 °C / 75 °F, average daily high 23.3 °C / 74 °F, precipitation 51 mm / 2 in, share of daylight that is sunny 89%, wet days 5.5 days, days with heavy rain 1.9 days, average daily low 16.5 °C / 62 °F.
Against: relative humidity 77%.
October · good
In its favour: feels like (high) 20.3 °C / 69 °F, average daily high 20.9 °C / 70 °F, share of daylight that is sunny 80%, average daily low 14.9 °C / 59 °F, wet days 11.8 days.
Against: precipitation 145 mm / 5.7 in, days with heavy rain 5 days, relative humidity 79%.
Beach and swimming
Hot, dry and sunny. Penalises the monsoon hard.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: neither
- JJune: good
- JJuly: best
- AAugust: best
- SSeptember: good
- OOctober: neither
- NNovember: neither
- DDecember: neither
- Best
- July–August
- Good
- June, September
Why these months
June · good
In its favour: precipitation 33 mm / 1.3 in, share of daylight that is sunny 90%, days with heavy rain 1 days, wet days 5.9 days, wind (daily max) 22 km/h / 14 mph, average daily low 15.8 °C / 60 °F.
Against: average daily high 22.1 °C / 72 °F, feels like (high) 22.6 °C / 73 °F.
July · best
In its favour: precipitation 10 mm / 0.4 in, share of daylight that is sunny 92%, average daily high 24 °C / 75 °F, wet days 2.2 days, days with heavy rain 0.2 days, feels like (high) 24.9 °C / 77 °F, wind (daily max) 23 km/h / 14 mph, average daily low 17 °C / 63 °F.
August · best
In its favour: precipitation 10 mm / 0.4 in, share of daylight that is sunny 92%, average daily high 24.4 °C / 76 °F, wet days 2.3 days, days with heavy rain 0.1 days, feels like (high) 25.2 °C / 77 °F, wind (daily max) 23 km/h / 14 mph, average daily low 17.1 °C / 63 °F.
September · good
In its favour: precipitation 51 mm / 2 in, share of daylight that is sunny 89%, wet days 5.5 days, days with heavy rain 1.9 days, average daily high 23.3 °C / 74 °F, feels like (high) 23.7 °C / 75 °F, wind (daily max) 21 km/h / 13 mph, average daily low 16.5 °C / 62 °F.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: good
- FFebruary: best
- MMarch: best
- AApril: best
- MMay: best
- JJune: best
- JJuly: best
- AAugust: best
- SSeptember: best
- OOctober: good
- NNovember: neither
- DDecember: neither
- Best
- February–September
- Good
- January, October
Why these months
January · good
In its favour: average daily high 13.7 °C / 57 °F, feels like (high) 11.3 °C / 52 °F, average daily low 8.6 °C / 47 °F, share of daylight that is sunny 74%, precipitation 126 mm / 4.9 in, wet days 12.5 days, wind (daily max) 22 km/h / 14 mph.
Against: days with heavy rain 5.1 days, daylight per day 9.6 h.
February · best
In its favour: average daily high 14.7 °C / 58 °F, precipitation 99 mm / 3.9 in, feels like (high) 12.1 °C / 54 °F, average daily low 8.9 °C / 48 °F, share of daylight that is sunny 79%, wet days 10.4 days, days with heavy rain 3.7 days, daylight per day 10.7 h, wind (daily max) 23 km/h / 14 mph.
March · best
In its favour: average daily high 16 °C / 61 °F, precipitation 102 mm / 4 in, feels like (high) 13.9 °C / 57 °F, average daily low 10.1 °C / 50 °F, share of daylight that is sunny 81%, daylight per day 12 h, wet days 11.3 days, days with heavy rain 3.9 days, wind (daily max) 24 km/h / 15 mph.
April · best
In its favour: average daily high 17.9 °C / 64 °F, precipitation 101 mm / 4 in, feels like (high) 16.9 °C / 62 °F, average daily low 11.8 °C / 53 °F, share of daylight that is sunny 85%, daylight per day 13.3 h, wet days 10.4 days, wind (daily max) 22 km/h / 14 mph.
Against: days with heavy rain 4 days.
May · best
In its favour: average daily high 20 °C / 68 °F, precipitation 63 mm / 2.5 in, wet days 8.7 days, days with heavy rain 2 days, feels like (high) 19.8 °C / 68 °F, average daily low 13.7 °C / 57 °F, share of daylight that is sunny 87%, daylight per day 14.4 h, wind (daily max) 23 km/h / 14 mph.
June · best
In its favour: average daily high 22.1 °C / 72 °F, precipitation 33 mm / 1.3 in, wet days 5.9 days, days with heavy rain 1 days, share of daylight that is sunny 90%, daylight per day 15 h, feels like (high) 22.6 °C / 73 °F, average daily low 15.8 °C / 60 °F, wind (daily max) 22 km/h / 14 mph.
July · best
In its favour: precipitation 10 mm / 0.4 in, average daily high 24 °C / 75 °F, wet days 2.2 days, days with heavy rain 0.2 days, share of daylight that is sunny 92%, daylight per day 14.7 h, wind (daily max) 23 km/h / 14 mph, feels like (high) 24.9 °C / 77 °F, average daily low 17 °C / 63 °F.
August · best
In its favour: precipitation 10 mm / 0.4 in, wet days 2.3 days, days with heavy rain 0.1 days, average daily high 24.4 °C / 76 °F, share of daylight that is sunny 92%, daylight per day 13.7 h, wind (daily max) 23 km/h / 14 mph, feels like (high) 25.2 °C / 77 °F.
Against: average daily low 17.1 °C / 63 °F.
September · best
In its favour: precipitation 51 mm / 2 in, average daily high 23.3 °C / 74 °F, wet days 5.5 days, days with heavy rain 1.9 days, share of daylight that is sunny 89%, daylight per day 12.5 h, feels like (high) 23.7 °C / 75 °F, wind (daily max) 21 km/h / 13 mph, average daily low 16.5 °C / 62 °F.
October · good
In its favour: average daily high 20.9 °C / 70 °F, feels like (high) 20.3 °C / 69 °F, share of daylight that is sunny 80%, average daily low 14.9 °C / 59 °F, daylight per day 11.1 h, wet days 11.8 days, wind (daily max) 21 km/h / 13 mph.
Against: precipitation 145 mm / 5.7 in, days with heavy rain 5 days.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is La Covatilla, 252 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | 11.3 °C | 12.1 °C | 13.9 °C | 16.9 °C | 19.8 °C | 22.6 °C | 24.9 °C | 25.2 °C | 23.7 °C | 20.3 °C | 14.8 °C | 12.4 °C |
| Days with heavy rain | 5.1 days | 3.7 days | 3.9 days | 4 days | 2 days | 1 days | 0.2 days | 0.1 days | 1.9 days | 5 days | 5.2 days | 4.9 days |
| Time rain usually falls | 2 pm | 3 pm | 2 pm | 4 pm | 2 pm | 5 am | 1 pm | 2 am | 6 am | 10 am | 5 pm | 12 am |
| Sunshine per day | 7.1 h | 8.4 h | 9.7 h | 11.3 h | 12.5 h | 13.5 h | 13.6 h | 12.6 h | 11.1 h | 8.9 h | 7.5 h | 7.1 h |
| Relative humidity | 81% | 77% | 75% | 76% | 75% | 77% | 76% | 76% | 77% | 79% | 81% | 81% |
Sea temperature
Averaged over a shorter period (2022–2025) than the twenty-year averages above.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature 2022–2025 | 14.1 °C | 14.1 °C | 14.6 °C | 16.4 °C | 17.2 °C | 19.1 °C | 19.3 °C | 19.1 °C | 18.2 °C | 18.6 °C | 16.9 °C | 14.9 °C |
| Sea temperature (daily max) 2022–2025 | 14.2 °C | 14.3 °C | 14.8 °C | 16.6 °C | 17.4 °C | 19.3 °C | 19.5 °C | 19.4 °C | 18.4 °C | 18.7 °C | 17 °C | 15 °C |
- Very cold 10 °C or less
- Cold 10 to 15 °C
- Cool 15 to 20 °C
- Comfortable 20 to 25 °C
- Warm 25 to 28 °C
- Very warm over 28 °C
The words describe how the water feels to swim in. They are ours, not an official standard.
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 10 µg/m³ | 11.8 µg/m³ | 11.3 µg/m³ | 11.8 µg/m³ | 12.4 µg/m³ | 14.2 µg/m³ | 12.3 µg/m³ | 13.9 µg/m³ | 15.1 µg/m³ | 13 µg/m³ | 10.2 µg/m³ | 9.6 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 13.6 µg/m³ | 16.5 µg/m³ | 15.6 µg/m³ | 16 µg/m³ | 16.2 µg/m³ | 18.9 µg/m³ | 16 µg/m³ | 18.2 µg/m³ | 24.6 µg/m³ | 17.2 µg/m³ | 13.5 µg/m³ | 14.1 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.