Leça do Bailio weather in April
In April, Leça do Bailio sees average daytime highs of 16°C and overnight lows near 12°C, with 107 mm of rain across 11.2 wet days and about 13.1 hours of daylight. It is the 7th-warmest and 5th-wettest month of the year here.
Day-to-day highs hold fairly steady near 16°C through the month. The sky is clear or mostly clear about 39% of the time in April, and the air most often feels dry.
Daylight stretches from about 12 h 24 min at the start of April to 13 h 42 min by month's end. Set against the rest of the year, April is Leça do Bailio's 6th-clearest and 5th-windiest month. For the whole year in context, see Leça do Bailio's year-round climate.
- Daytime high
- 16°
- 7th warmest
- Overnight low
- 12°
- 6th coldest
- Rainfall
- 107 mm
- 11.2 wet days
- Daylight
- 13 h 06 min
- 6:02 AM – 7:08 PM
- Cloud cover
- 52%
- 6th clearest
- Wind
- 16 km/h
- 5th windiest
- Solar energy
- 5.53 kWh/m²
- Travel score
- 5.1
- out of 10
Leça do Bailio is human settlement in Portugal.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in April
Day-to-day highs hold fairly steady near 16°C through the month.
A typical April day in Leça do Bailio reaches about 16°C in the afternoon and slips back to 12°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 20°C. Set against its neighbours, April runs about 1°C warmer than March and about 2°C cooler than May.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 |
| Avg low (°C) | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 16 | 11 |
| 2 | 16 | 11 |
| 3 | 16 | 11 |
| 4 | 16 | 11 |
| 5 | 16 | 11 |
| 6 | 16 | 11 |
| 7 | 16 | 12 |
| 8 | 16 | 12 |
| 9 | 16 | 12 |
| 10 | 16 | 12 |
| 11 | 16 | 12 |
| 12 | 16 | 12 |
| 13 | 16 | 12 |
| 14 | 16 | 12 |
| 15 | 16 | 12 |
| 16 | 16 | 12 |
| 17 | 16 | 12 |
| 18 | 16 | 12 |
| 19 | 16 | 12 |
| 20 | 16 | 12 |
| 21 | 16 | 12 |
| 22 | 17 | 12 |
| 23 | 17 | 12 |
| 24 | 17 | 12 |
| 25 | 17 | 12 |
| 26 | 17 | 12 |
| 27 | 17 | 12 |
| 28 | 17 | 13 |
| 29 | 17 | 13 |
| 30 | 17 | 13 |
Leça do Bailio weather by month
How April compares with the rest of the year at a glance. April is the 7th-warmest and 5th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 13° / 9° | 133 | 12.3 | 9.4 | 3.5 |
| Feb | 14° / 9° | 91 | 9.3 | 10.3 | 3.9 |
| Mar | 15° / 11° | 106 | 10.2 | 11.7 | 4.7 |
| Apr | 16° / 12° | 107 | 11.2 | 13.1 | 5.1 |
| May | 18° / 14° | 90 | 10.4 | 14.3 | 6.1 |
| Jun | 21° / 16° | 31 | 5.5 | 14.9 | 7.4 |
| Jul | 22° / 18° | 18 | 3.4 | 14.7 | 8.4 |
| Aug | 23° / 18° | 22 | 3.8 | 13.6 | 8.4 |
| Sep | 22° / 17° | 54 | 6.3 | 12.3 | 7.4 |
| Oct | 19° / 15° | 148 | 12.5 | 10.9 | 5.9 |
| Nov | 16° / 12° | 156 | 13.3 | 9.7 | 4.6 |
| Dec | 14° / 10° | 151 | 12.8 | 9.1 | 3.8 |
Cloud cover in April
The sky is clear or mostly clear about 39% of the time in April.
Beyond those clear spells, partly cloudy skies cover about 17% of April, with mostly cloudy or overcast conditions the remaining 44%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 52 | 54 | 54 | 54 | 55 | 56 | 57 | 57 | 57 | 58 | 58 | 58 | 58 | 57 | 57 | 57 | 56 | 56 | 55 | 55 | 55 | 54 | 55 | 55 | 55 | 55 | 55 | 57 | 57 | 57 |
| Cloudier (%) | 48 | 46 | 46 | 46 | 45 | 44 | 43 | 43 | 43 | 42 | 42 | 42 | 42 | 43 | 43 | 43 | 44 | 44 | 45 | 45 | 45 | 46 | 45 | 45 | 45 | 45 | 45 | 43 | 43 | 43 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 52 | 48 |
| 2 | 54 | 46 |
| 3 | 54 | 46 |
| 4 | 54 | 46 |
| 5 | 55 | 45 |
| 6 | 56 | 44 |
| 7 | 57 | 43 |
| 8 | 57 | 43 |
| 9 | 57 | 43 |
| 10 | 58 | 42 |
| 11 | 58 | 42 |
| 12 | 58 | 42 |
| 13 | 58 | 42 |
| 14 | 57 | 43 |
| 15 | 57 | 43 |
| 16 | 57 | 43 |
| 17 | 56 | 44 |
| 18 | 56 | 44 |
| 19 | 55 | 45 |
| 20 | 55 | 45 |
| 21 | 55 | 45 |
| 22 | 54 | 46 |
| 23 | 55 | 45 |
| 24 | 55 | 45 |
| 25 | 55 | 45 |
| 26 | 55 | 45 |
| 27 | 55 | 45 |
| 28 | 57 | 43 |
| 29 | 57 | 43 |
| 30 | 57 | 43 |
Chance of precipitation in April
Leça do Bailio gets around 107 mm of rain over 11.2 wet days in April. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 37% and peaks near 40% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 38 | 37 | 37 | 37 | 36 | 36 | 36 | 35 | 35 | 35 | 36 | 36 | 37 | 37 | 38 | 39 | 39 | 39 | 40 | 40 | 40 | 40 | 39 | 39 | 39 | 38 | 37 | 37 | 36 | 36 |
| Rain chance (%) | |
|---|---|
| 1 | 38 |
| 2 | 37 |
| 3 | 37 |
| 4 | 37 |
| 5 | 36 |
| 6 | 36 |
| 7 | 36 |
| 8 | 35 |
| 9 | 35 |
| 10 | 35 |
| 11 | 36 |
| 12 | 36 |
| 13 | 37 |
| 14 | 37 |
| 15 | 38 |
| 16 | 39 |
| 17 | 39 |
| 18 | 39 |
| 19 | 40 |
| 20 | 40 |
| 21 | 40 |
| 22 | 40 |
| 23 | 39 |
| 24 | 39 |
| 25 | 39 |
| 26 | 38 |
| 27 | 37 |
| 28 | 37 |
| 29 | 36 |
| 30 | 36 |
Humidity in April
Most of April feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, April lands in the dry band about 85% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 94 | 93 | 92 | 91 | 91 | 90 | 89 | 89 | 88 | 88 | 87 | 87 | 86 | 86 | 86 | 85 | 85 | 85 | 84 | 84 | 83 | 82 | 82 | 81 | 81 | 80 | 78 | 77 | 76 | 75 |
| Comfortable (%) | 6 | 7 | 8 | 9 | 9 | 10 | 11 | 11 | 12 | 12 | 13 | 13 | 14 | 14 | 14 | 15 | 15 | 15 | 16 | 16 | 16 | 17 | 17 | 18 | 18 | 19 | 20 | 21 | 22 | 23 |
| Humid (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 94 | 6 | 0 |
| 2 | 93 | 7 | 0 |
| 3 | 92 | 8 | 0 |
| 4 | 91 | 9 | 0 |
| 5 | 91 | 9 | 0 |
| 6 | 90 | 10 | 0 |
| 7 | 89 | 11 | 0 |
| 8 | 89 | 11 | 0 |
| 9 | 88 | 12 | 0 |
| 10 | 88 | 12 | 0 |
| 11 | 87 | 13 | 0 |
| 12 | 87 | 13 | 0 |
| 13 | 86 | 14 | 0 |
| 14 | 86 | 14 | 0 |
| 15 | 86 | 14 | 0 |
| 16 | 85 | 15 | 0 |
| 17 | 85 | 15 | 0 |
| 18 | 85 | 15 | 0 |
| 19 | 84 | 16 | 0 |
| 20 | 84 | 16 | 0 |
| 21 | 83 | 16 | 1 |
| 22 | 82 | 17 | 1 |
| 23 | 82 | 17 | 1 |
| 24 | 81 | 18 | 1 |
| 25 | 81 | 18 | 1 |
| 26 | 80 | 19 | 1 |
| 27 | 78 | 20 | 2 |
| 28 | 77 | 21 | 2 |
| 29 | 76 | 22 | 2 |
| 30 | 75 | 23 | 2 |
Wind in April
Winds average 16 km/h in April.
Across April, daily wind ranges from about 16 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 17 | light breeze |
| 2 | 17 | light breeze |
| 3 | 17 | light breeze |
| 4 | 16 | light breeze |
| 5 | 16 | light breeze |
| 6 | 16 | light breeze |
| 7 | 16 | light breeze |
| 8 | 16 | light breeze |
| 9 | 16 | light breeze |
| 10 | 16 | light breeze |
| 11 | 16 | light breeze |
| 12 | 16 | light breeze |
| 13 | 16 | light breeze |
| 14 | 16 | light breeze |
| 15 | 16 | light breeze |
| 16 | 16 | light breeze |
| 17 | 16 | light breeze |
| 18 | 16 | light breeze |
| 19 | 16 | light breeze |
| 20 | 16 | light breeze |
| 21 | 16 | light breeze |
| 22 | 16 | light breeze |
| 23 | 16 | light breeze |
| 24 | 16 | light breeze |
| 25 | 16 | light breeze |
| 26 | 16 | light breeze |
| 27 | 16 | light breeze |
| 28 | 16 | light breeze |
| 29 | 16 | light breeze |
| 30 | 16 | light breeze |
Sunrise & sunset in April
Daylight runs from about 12 h 24 min at the start of April to 13 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 78 minutes over April. Sunrise moves from 6:27 AM to 5:41 AM, and sunset from 6:52 PM to 7:23 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.4 | 12.5 | 12.5 | 12.6 | 12.6 | 12.6 | 12.7 | 12.7 | 12.8 | 12.8 | 12.9 | 12.9 | 13.0 | 13.0 | 13.1 | 13.1 | 13.1 | 13.2 | 13.2 | 13.3 | 13.3 | 13.4 | 13.4 | 13.5 | 13.5 | 13.5 | 13.6 | 13.6 | 13.7 | 13.7 |
| Sunrise (AM) | 6:27 | 6:25 | 6:23 | 6:22 | 6:20 | 6:18 | 6:17 | 6:15 | 6:13 | 6:12 | 6:10 | 6:08 | 6:07 | 6:05 | 6:03 | 6:02 | 6:00 | 5:59 | 5:57 | 5:55 | 5:54 | 5:52 | 5:51 | 5:49 | 5:48 | 5:46 | 5:45 | 5:44 | 5:42 | 5:41 |
| Sunset (PM) | 6:52 | 6:53 | 6:54 | 6:55 | 6:56 | 6:57 | 6:58 | 6:59 | 7:00 | 7:01 | 7:02 | 7:03 | 7:05 | 7:06 | 7:07 | 7:08 | 7:09 | 7:10 | 7:11 | 7:12 | 7:13 | 7:14 | 7:15 | 7:17 | 7:18 | 7:19 | 7:20 | 7:21 | 7:22 | 7:23 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.4 | 6:27 | 6:52 |
| 2 | 12.5 | 6:25 | 6:53 |
| 3 | 12.5 | 6:23 | 6:54 |
| 4 | 12.6 | 6:22 | 6:55 |
| 5 | 12.6 | 6:20 | 6:56 |
| 6 | 12.6 | 6:18 | 6:57 |
| 7 | 12.7 | 6:17 | 6:58 |
| 8 | 12.7 | 6:15 | 6:59 |
| 9 | 12.8 | 6:13 | 7:00 |
| 10 | 12.8 | 6:12 | 7:01 |
| 11 | 12.9 | 6:10 | 7:02 |
| 12 | 12.9 | 6:08 | 7:03 |
| 13 | 13.0 | 6:07 | 7:05 |
| 14 | 13.0 | 6:05 | 7:06 |
| 15 | 13.1 | 6:03 | 7:07 |
| 16 | 13.1 | 6:02 | 7:08 |
| 17 | 13.1 | 6:00 | 7:09 |
| 18 | 13.2 | 5:59 | 7:10 |
| 19 | 13.2 | 5:57 | 7:11 |
| 20 | 13.3 | 5:55 | 7:12 |
| 21 | 13.3 | 5:54 | 7:13 |
| 22 | 13.4 | 5:52 | 7:14 |
| 23 | 13.4 | 5:51 | 7:15 |
| 24 | 13.5 | 5:49 | 7:17 |
| 25 | 13.5 | 5:48 | 7:18 |
| 26 | 13.5 | 5:46 | 7:19 |
| 27 | 13.6 | 5:45 | 7:20 |
| 28 | 13.6 | 5:44 | 7:21 |
| 29 | 13.7 | 5:42 | 7:22 |
| 30 | 13.7 | 5:41 | 7:23 |
Solar energy in April
Average shortwave solar energy reaching the ground each day in April, about 5.53 kWh/m².
For context, solar energy here swings from a low near 1.68 kWh/m² to a high of 7.33 kWh/m² in July across the year — April's 5.53 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.9 | 5.0 | 5.0 | 5.1 | 5.1 | 5.2 | 5.2 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.5 | 5.5 | 5.5 | 5.6 | 5.6 | 5.6 | 5.7 | 5.7 | 5.7 | 5.7 | 5.8 | 5.8 | 5.9 | 5.9 | 5.9 | 6.0 | 6.0 | 6.0 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.9 | Bright |
| 2 | 5.0 | Bright |
| 3 | 5.0 | Bright |
| 4 | 5.1 | Bright |
| 5 | 5.1 | Bright |
| 6 | 5.2 | Bright |
| 7 | 5.2 | Bright |
| 8 | 5.3 | Bright |
| 9 | 5.3 | Bright |
| 10 | 5.3 | Bright |
| 11 | 5.4 | Bright |
| 12 | 5.4 | Bright |
| 13 | 5.5 | Bright |
| 14 | 5.5 | Bright |
| 15 | 5.5 | Bright |
| 16 | 5.6 | Bright |
| 17 | 5.6 | Bright |
| 18 | 5.6 | Bright |
| 19 | 5.7 | Bright |
| 20 | 5.7 | Bright |
| 21 | 5.7 | Bright |
| 22 | 5.7 | Bright |
| 23 | 5.8 | Bright |
| 24 | 5.8 | Bright |
| 25 | 5.9 | Bright |
| 26 | 5.9 | Bright |
| 27 | 5.9 | Bright |
| 28 | 6.0 | Bright |
| 29 | 6.0 | Intense |
| 30 | 6.0 | Intense |
Hazard calendar for Leça do Bailio
In April, Leça do Bailio sits inside its rainy season season. The full year is below, with each hazard's peak months called out.
Leça do Bailio's rainy season runs October–May, when most of the year's rain falls.
Is April a good time to visit Leça do Bailio?
Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
April is a reasonable time to visit Leça do Bailio for sightseeing.
What to pack for Leça do Bailio in April
From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In April, Leça do Bailio sees daytime highs around 16°C and nights near 12°C. Worth packing: a warm layer, rain gear and sun protection. About 11 days see rain.
Sea temperature near Leça do Bailio in April
The nearest coast averages about 14°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in September at about 17°C and coldest in February near 13°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 14 | 13 | 14 | 14 | 16 | 17 | 17 | 17 | 17 | 17 | 16 | 14 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 14 | Bracing |
| Feb | 13 | Bracing |
| Mar | 14 | Bracing |
| Apr | 14 | Bracing |
| May | 16 | Cool |
| Jun | 17 | Cool |
| Jul | 17 | Cool |
| Aug | 17 | Cool |
| Sep | 17 | Cool |
| Oct | 17 | Cool |
| Nov | 16 | Cool |
| Dec | 14 | Bracing |
UV index in Leça do Bailio in April
Clear-sky midday UV in April peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Leça do Bailio peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 6 | 7 | 9 | 9 | 8 | 5 | 4 | 2 | 2 |
| Level | Low | Moderate | Moderate | High | High | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 6 | High |
| May | 7 | High |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 8 | Very high |
| Sep | 5 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Moderate |
| Dec | 2 | Low |
Air quality in Leça do Bailio in April
Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.
Air quality in Leça do Bailio is worst in September — around 19 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (November, 7 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 8 | 9 | 12 | 11 | 9 | 9 | 8 | 16 | 19 | 13 | 7 | 7 |
| Level | Good | Good | Moderate | Good | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 9 | Good |
| Mar | 12 | Moderate |
| Apr | 11 | Good |
| May | 9 | Good |
| Jun | 9 | Good |
| Jul | 8 | Good |
| Aug | 16 | Moderate |
| Sep | 19 | Moderate |
| Oct | 13 | Moderate |
| Nov | 7 | Good |
| Dec | 7 | Good |
Where is Leça do Bailio?
Leça do Bailio sits at 41.2°N, 8.6°W, 90 m above sea level, in Portugal. The nearest listed city is São Tiago de Custoias, 1.0 km away.
Topography around Leça do Bailio
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Leça do Bailio.
Within 3 km, the terrain around Leça do Bailio has only modest variations in elevation — a maximum elevation change of 105 m around an average of 69 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 377 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,466 m.
The land around Leça do Bailio is covered by artificial surfaces (50%) and trees (26%) within 3 km, trees (29%), water (28%) and artificial surfaces (24%) within 16 km, and trees (41%), water (27%) and grassland (24%) within 80 km.
Portugal travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / E / F
- 230 V · 50 Hz
- Prices
- ≈ 60% of US
- price level, 2025
- GDP per capita
- $32,082
- 2025
- Happiness
- 6.0 / 10
- World Happiness, 2025
- Safe drinking water
- 95%
- of population, 2024
- Homicide rate
- 0.7
- per 100k, 2022
- Road deaths
- 8.2
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very high
- EF EPI 612
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Leça do Bailio (41.212°, -8.6342°, elevation 90 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).