Leça do Bailio weather in December
In December, Leça do Bailio sees average daytime highs of 14°C and overnight lows near 10°C, with 151 mm of rain across 12.8 wet days and about 9.1 hours of daylight. It is the 10th-warmest and 2nd-wettest month of the year here.
Day-to-day highs hold fairly steady near 14°C through the month. The sky is clear or mostly clear about 31% of the time in December, and the air most often feels dry.
Daylight stretches from about 9 h 12 min at the start of December to 9 h 06 min by month's end. Set against the rest of the year, December is Leça do Bailio's 12th-clearest and 1st-windiest month. For the whole year in context, see Leça do Bailio's year-round climate.
- Daytime high
- 14°
- 10th warmest
- Overnight low
- 10°
- 3rd coldest
- Rainfall
- 151 mm
- 12.8 wet days
- Daylight
- 9 hours
- 7:59 AM – 5:02 PM
- Cloud cover
- 60%
- 12th clearest
- Wind
- 17 km/h
- 1st windiest
- Solar energy
- 1.68 kWh/m²
- Travel score
- 3.8
- 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 December
Day-to-day highs hold fairly steady near 14°C through the month.
A typical December day in Leça do Bailio reaches about 14°C in the afternoon and slips back to 10°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 16°C. Set against its neighbours, December runs about 2°C cooler than November and about 1°C warmer than January.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
| Avg low (°C) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 14 | 10 |
| 2 | 14 | 10 |
| 3 | 14 | 10 |
| 4 | 14 | 10 |
| 5 | 14 | 10 |
| 6 | 14 | 10 |
| 7 | 14 | 10 |
| 8 | 14 | 10 |
| 9 | 14 | 10 |
| 10 | 14 | 10 |
| 11 | 14 | 10 |
| 12 | 14 | 10 |
| 13 | 14 | 10 |
| 14 | 14 | 10 |
| 15 | 14 | 10 |
| 16 | 14 | 10 |
| 17 | 14 | 10 |
| 18 | 14 | 10 |
| 19 | 14 | 10 |
| 20 | 14 | 10 |
| 21 | 14 | 10 |
| 22 | 14 | 10 |
| 23 | 14 | 10 |
| 24 | 14 | 10 |
| 25 | 13 | 10 |
| 26 | 13 | 9 |
| 27 | 13 | 9 |
| 28 | 13 | 9 |
| 29 | 13 | 9 |
| 30 | 13 | 9 |
| 31 | 13 | 9 |
Leça do Bailio weather by month
How December compares with the rest of the year at a glance. December is the 10th-warmest and 2nd-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 December
The sky is clear or mostly clear about 31% of the time in December, the cloudiest month of the year.
Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 55%.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 47 | 46 | 46 | 45 | 45 | 44 | 44 | 44 | 44 | 45 | 45 | 45 | 45 | 46 | 45 | 45 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 45 | 45 | 44 | 44 | 44 | 44 | 43 | 43 |
| Cloudier (%) | 53 | 54 | 54 | 55 | 55 | 56 | 56 | 56 | 56 | 55 | 55 | 55 | 55 | 54 | 55 | 55 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 55 | 55 | 56 | 56 | 56 | 56 | 57 | 57 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 47 | 53 |
| 2 | 46 | 54 |
| 3 | 46 | 54 |
| 4 | 45 | 55 |
| 5 | 45 | 55 |
| 6 | 44 | 56 |
| 7 | 44 | 56 |
| 8 | 44 | 56 |
| 9 | 44 | 56 |
| 10 | 45 | 55 |
| 11 | 45 | 55 |
| 12 | 45 | 55 |
| 13 | 45 | 55 |
| 14 | 46 | 54 |
| 15 | 45 | 55 |
| 16 | 45 | 55 |
| 17 | 46 | 54 |
| 18 | 46 | 54 |
| 19 | 46 | 54 |
| 20 | 46 | 54 |
| 21 | 46 | 54 |
| 22 | 46 | 54 |
| 23 | 46 | 54 |
| 24 | 45 | 55 |
| 25 | 45 | 55 |
| 26 | 44 | 56 |
| 27 | 44 | 56 |
| 28 | 44 | 56 |
| 29 | 44 | 56 |
| 30 | 43 | 57 |
| 31 | 43 | 57 |
Chance of precipitation in December
Leça do Bailio gets around 151 mm of rain over 12.8 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 41% and peaks near 45% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 41 | 41 | 41 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 39 | 39 | 40 | 40 | 40 | 41 | 41 | 42 | 42 | 43 | 43 | 43 | 44 | 44 | 44 | 45 |
| Rain chance (%) | |
|---|---|
| 1 | 41 |
| 2 | 41 |
| 3 | 41 |
| 4 | 40 |
| 5 | 40 |
| 6 | 40 |
| 7 | 40 |
| 8 | 40 |
| 9 | 40 |
| 10 | 40 |
| 11 | 40 |
| 12 | 40 |
| 13 | 40 |
| 14 | 40 |
| 15 | 40 |
| 16 | 39 |
| 17 | 39 |
| 18 | 40 |
| 19 | 40 |
| 20 | 40 |
| 21 | 41 |
| 22 | 41 |
| 23 | 42 |
| 24 | 42 |
| 25 | 43 |
| 26 | 43 |
| 27 | 43 |
| 28 | 44 |
| 29 | 44 |
| 30 | 44 |
| 31 | 45 |
Humidity in December
Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the dry band about 93% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 92 | 92 | 93 | 93 | 93 | 93 | 93 | 93 | 93 | 93 | 94 | 94 | 94 | 94 | 94 | 94 | 94 | 94 | 94 | 94 | 94 | 94 | 94 | 94 | 93 | 93 | 93 | 93 | 93 | 93 | 93 |
| Comfortable (%) | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Dry (%) | Comfortable (%) | |
|---|---|---|
| 1 | 92 | 8 |
| 2 | 92 | 8 |
| 3 | 93 | 7 |
| 4 | 93 | 7 |
| 5 | 93 | 7 |
| 6 | 93 | 7 |
| 7 | 93 | 7 |
| 8 | 93 | 7 |
| 9 | 93 | 7 |
| 10 | 93 | 7 |
| 11 | 94 | 6 |
| 12 | 94 | 6 |
| 13 | 94 | 6 |
| 14 | 94 | 6 |
| 15 | 94 | 6 |
| 16 | 94 | 6 |
| 17 | 94 | 6 |
| 18 | 94 | 6 |
| 19 | 94 | 6 |
| 20 | 94 | 6 |
| 21 | 94 | 6 |
| 22 | 94 | 6 |
| 23 | 94 | 6 |
| 24 | 94 | 6 |
| 25 | 93 | 7 |
| 26 | 93 | 7 |
| 27 | 93 | 7 |
| 28 | 93 | 7 |
| 29 | 93 | 7 |
| 30 | 93 | 7 |
| 31 | 93 | 7 |
Wind in December
Winds average 17 km/h in December, the windiest month of the year.
Across December, 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 |
| 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 | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 16 | light breeze |
| 2 | 16 | light breeze |
| 3 | 16 | 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 | 17 | light breeze |
| 13 | 17 | light breeze |
| 14 | 17 | light breeze |
| 15 | 17 | light breeze |
| 16 | 17 | light breeze |
| 17 | 17 | light breeze |
| 18 | 17 | light breeze |
| 19 | 17 | light breeze |
| 20 | 17 | light breeze |
| 21 | 17 | light breeze |
| 22 | 17 | light breeze |
| 23 | 17 | light breeze |
| 24 | 17 | light breeze |
| 25 | 17 | light breeze |
| 26 | 17 | light breeze |
| 27 | 17 | light breeze |
| 28 | 17 | light breeze |
| 29 | 17 | light breeze |
| 30 | 17 | light breeze |
| 31 | 17 | light breeze |
Sunrise & sunset in December
Daylight runs from about 9 h 12 min at the start of December to 9 h 06 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 6 minutes over December. Sunrise moves from 7:47 AM to 8:06 AM, and sunset from 5:02 PM to 5:10 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 9.2 | 9.2 | 9.2 | 9.2 | 9.2 | 9.2 | 9.1 | 9.1 | 9.1 | 9.1 | 9.1 | 9.1 | 9.1 | 9.1 | 9.0 | 9.0 | 9.0 | 9.0 | 9.0 | 9.0 | 9.0 | 9.0 | 9.0 | 9.0 | 9.0 | 9.0 | 9.0 | 9.0 | 9.0 | 9.1 | 9.1 |
| Sunrise (AM) | 7:47 | 7:48 | 7:49 | 7:50 | 7:51 | 7:52 | 7:52 | 7:53 | 7:54 | 7:55 | 7:56 | 7:57 | 7:57 | 7:58 | 7:59 | 7:59 | 8:00 | 8:01 | 8:01 | 8:02 | 8:02 | 8:03 | 8:03 | 8:04 | 8:04 | 8:04 | 8:05 | 8:05 | 8:05 | 8:06 | 8:06 |
| Sunset (PM) | 5:02 | 5:01 | 5:01 | 5:01 | 5:01 | 5:01 | 5:01 | 5:01 | 5:01 | 5:01 | 5:01 | 5:01 | 5:01 | 5:02 | 5:02 | 5:02 | 5:02 | 5:03 | 5:03 | 5:03 | 5:04 | 5:04 | 5:05 | 5:05 | 5:06 | 5:06 | 5:07 | 5:08 | 5:08 | 5:09 | 5:10 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 9.2 | 7:47 | 5:02 |
| 2 | 9.2 | 7:48 | 5:01 |
| 3 | 9.2 | 7:49 | 5:01 |
| 4 | 9.2 | 7:50 | 5:01 |
| 5 | 9.2 | 7:51 | 5:01 |
| 6 | 9.2 | 7:52 | 5:01 |
| 7 | 9.1 | 7:52 | 5:01 |
| 8 | 9.1 | 7:53 | 5:01 |
| 9 | 9.1 | 7:54 | 5:01 |
| 10 | 9.1 | 7:55 | 5:01 |
| 11 | 9.1 | 7:56 | 5:01 |
| 12 | 9.1 | 7:57 | 5:01 |
| 13 | 9.1 | 7:57 | 5:01 |
| 14 | 9.1 | 7:58 | 5:02 |
| 15 | 9.0 | 7:59 | 5:02 |
| 16 | 9.0 | 7:59 | 5:02 |
| 17 | 9.0 | 8:00 | 5:02 |
| 18 | 9.0 | 8:01 | 5:03 |
| 19 | 9.0 | 8:01 | 5:03 |
| 20 | 9.0 | 8:02 | 5:03 |
| 21 | 9.0 | 8:02 | 5:04 |
| 22 | 9.0 | 8:03 | 5:04 |
| 23 | 9.0 | 8:03 | 5:05 |
| 24 | 9.0 | 8:04 | 5:05 |
| 25 | 9.0 | 8:04 | 5:06 |
| 26 | 9.0 | 8:04 | 5:06 |
| 27 | 9.0 | 8:05 | 5:07 |
| 28 | 9.0 | 8:05 | 5:08 |
| 29 | 9.0 | 8:05 | 5:08 |
| 30 | 9.1 | 8:06 | 5:09 |
| 31 | 9.1 | 8:06 | 5:10 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 1.68 kWh/m² — the year's lowest.
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 — December's 1.68 kWh/m² sits near the bottom.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 1.8 | 1.8 | 1.8 | 1.8 | 1.8 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 |
| Level | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 1.8 | Dim |
| 2 | 1.8 | Dim |
| 3 | 1.8 | Dim |
| 4 | 1.8 | Dim |
| 5 | 1.8 | Dim |
| 6 | 1.7 | Dim |
| 7 | 1.7 | Dim |
| 8 | 1.7 | Dim |
| 9 | 1.7 | Dim |
| 10 | 1.7 | Dim |
| 11 | 1.7 | Dim |
| 12 | 1.7 | Dim |
| 13 | 1.7 | Dim |
| 14 | 1.7 | Dim |
| 15 | 1.7 | Dim |
| 16 | 1.7 | Dim |
| 17 | 1.7 | Dim |
| 18 | 1.7 | Dim |
| 19 | 1.7 | Dim |
| 20 | 1.7 | Dim |
| 21 | 1.7 | Dim |
| 22 | 1.7 | Dim |
| 23 | 1.7 | Dim |
| 24 | 1.7 | Dim |
| 25 | 1.7 | Dim |
| 26 | 1.7 | Dim |
| 27 | 1.7 | Dim |
| 28 | 1.7 | Dim |
| 29 | 1.7 | Dim |
| 30 | 1.7 | Dim |
| 31 | 1.7 | Dim |
Hazard calendar for Leça do Bailio
In December, 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 December a good time to visit Leça do Bailio?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a weaker month for outdoor sightseeing in Leça do Bailio.
What to pack for Leça do Bailio in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Leça do Bailio sees daytime highs around 14°C and nights near 10°C. Worth packing: a warm layer and rain gear. About 13 days see rain.
Sea temperature near Leça do Bailio in December
The nearest coast averages about 14°C in December — 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 December
Clear-sky midday UV in December peaks around 2. 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 December
Average fine-particle pollution (PM2.5) through the year — so you can see where December 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).