Leça do Bailio weather in May
In May, Leça do Bailio sees average daytime highs of 18°C and overnight lows near 14°C, with 90 mm of rain across 10.4 wet days and about 14.3 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.
Highs climb over the month, from about 17°C in the first days to 19°C by the end. The sky is clear or mostly clear about 42% of the time in May, and the air most often feels dry.
Daylight stretches from about 13 h 42 min at the start of May to 14 h 42 min by month's end. Set against the rest of the year, May is Leça do Bailio's 5th-clearest and 8th-windiest month. For the whole year in context, see Leça do Bailio's year-round climate.
- Daytime high
- 18°
- 6th warmest
- Overnight low
- 14°
- 7th coldest
- Rainfall
- 90 mm
- 10.4 wet days
- Daylight
- 14 h 18 min
- 5:22 AM – 7:40 PM
- Cloud cover
- 48%
- 5th clearest
- Wind
- 16 km/h
- 8th windiest
- Solar energy
- 6.55 kWh/m²
- Travel score
- 6.1
- 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 May
Highs climb over the month, from about 17°C in the first days to 19°C by the end.
A typical May day in Leça do Bailio reaches about 18°C in the afternoon and slips back to 14°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 23°C. Set against its neighbours, May runs about 2°C warmer than April and about 2°C cooler than June.
| 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) | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 |
| Avg low (°C) | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 17 | 13 |
| 2 | 17 | 13 |
| 3 | 17 | 13 |
| 4 | 17 | 13 |
| 5 | 17 | 13 |
| 6 | 17 | 13 |
| 7 | 18 | 13 |
| 8 | 18 | 13 |
| 9 | 18 | 13 |
| 10 | 18 | 13 |
| 11 | 18 | 14 |
| 12 | 18 | 14 |
| 13 | 18 | 14 |
| 14 | 18 | 14 |
| 15 | 18 | 14 |
| 16 | 18 | 14 |
| 17 | 18 | 14 |
| 18 | 19 | 14 |
| 19 | 19 | 14 |
| 20 | 19 | 14 |
| 21 | 19 | 14 |
| 22 | 19 | 15 |
| 23 | 19 | 15 |
| 24 | 19 | 15 |
| 25 | 19 | 15 |
| 26 | 19 | 15 |
| 27 | 19 | 15 |
| 28 | 19 | 15 |
| 29 | 20 | 15 |
| 30 | 20 | 15 |
| 31 | 20 | 15 |
Leça do Bailio weather by month
How May compares with the rest of the year at a glance. May is the 6th-warmest and 8th-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 May
The sky is clear or mostly clear about 42% of the time in May.
Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 40%. Skies tend to open up as the month goes on.
| 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 (%) | 57 | 57 | 57 | 57 | 57 | 57 | 57 | 57 | 58 | 58 | 58 | 58 | 58 | 59 | 59 | 60 | 60 | 61 | 61 | 61 | 63 | 63 | 63 | 64 | 63 | 63 | 63 | 63 | 63 | 63 | 63 |
| Cloudier (%) | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 42 | 42 | 42 | 42 | 42 | 41 | 41 | 40 | 40 | 39 | 39 | 39 | 37 | 37 | 37 | 36 | 37 | 37 | 37 | 37 | 37 | 37 | 37 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 57 | 43 |
| 2 | 57 | 43 |
| 3 | 57 | 43 |
| 4 | 57 | 43 |
| 5 | 57 | 43 |
| 6 | 57 | 43 |
| 7 | 57 | 43 |
| 8 | 57 | 43 |
| 9 | 58 | 42 |
| 10 | 58 | 42 |
| 11 | 58 | 42 |
| 12 | 58 | 42 |
| 13 | 58 | 42 |
| 14 | 59 | 41 |
| 15 | 59 | 41 |
| 16 | 60 | 40 |
| 17 | 60 | 40 |
| 18 | 61 | 39 |
| 19 | 61 | 39 |
| 20 | 61 | 39 |
| 21 | 63 | 37 |
| 22 | 63 | 37 |
| 23 | 63 | 37 |
| 24 | 64 | 36 |
| 25 | 63 | 37 |
| 26 | 63 | 37 |
| 27 | 63 | 37 |
| 28 | 63 | 37 |
| 29 | 63 | 37 |
| 30 | 63 | 37 |
| 31 | 63 | 37 |
Chance of precipitation in May
Leça do Bailio gets around 90 mm of rain over 10.4 wet days in May. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 33% and peaks near 36% on the wettest days. The odds ease toward the end of the month.
| 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 (%) | 35 | 35 | 35 | 35 | 35 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 35 | 35 | 34 | 34 | 33 | 33 | 32 | 32 | 31 | 31 | 30 | 29 | 29 | 28 | 28 | 27 | 27 |
| Rain chance (%) | |
|---|---|
| 1 | 35 |
| 2 | 35 |
| 3 | 35 |
| 4 | 35 |
| 5 | 35 |
| 6 | 36 |
| 7 | 36 |
| 8 | 36 |
| 9 | 36 |
| 10 | 36 |
| 11 | 36 |
| 12 | 36 |
| 13 | 36 |
| 14 | 36 |
| 15 | 35 |
| 16 | 35 |
| 17 | 34 |
| 18 | 34 |
| 19 | 33 |
| 20 | 33 |
| 21 | 32 |
| 22 | 32 |
| 23 | 31 |
| 24 | 31 |
| 25 | 30 |
| 26 | 29 |
| 27 | 29 |
| 28 | 28 |
| 29 | 28 |
| 30 | 27 |
| 31 | 27 |
Humidity in May
Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, May lands in the dry band about 55% 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 (%) | 74 | 73 | 71 | 70 | 69 | 68 | 67 | 65 | 64 | 63 | 62 | 62 | 60 | 59 | 58 | 56 | 56 | 54 | 53 | 50 | 49 | 47 | 45 | 43 | 41 | 40 | 38 | 36 | 35 | 34 | 33 |
| Comfortable (%) | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 34 | 35 | 36 | 37 | 38 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 47 | 48 | 49 | 51 | 50 | 52 | 52 |
| Humid (%) | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 10 | 10 | 11 | 11 | 12 | 12 | 13 | 13 | 14 |
| Muggy (%) | 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 | 1 | 1 | 1 | 2 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 74 | 24 | 2 | 0 |
| 2 | 73 | 25 | 2 | 0 |
| 3 | 71 | 26 | 3 | 0 |
| 4 | 70 | 27 | 3 | 0 |
| 5 | 69 | 28 | 3 | 0 |
| 6 | 68 | 29 | 3 | 0 |
| 7 | 67 | 30 | 3 | 0 |
| 8 | 65 | 31 | 4 | 0 |
| 9 | 64 | 32 | 4 | 0 |
| 10 | 63 | 33 | 4 | 0 |
| 11 | 62 | 34 | 4 | 0 |
| 12 | 62 | 34 | 4 | 0 |
| 13 | 60 | 35 | 5 | 0 |
| 14 | 59 | 36 | 5 | 0 |
| 15 | 58 | 37 | 5 | 0 |
| 16 | 56 | 38 | 6 | 0 |
| 17 | 56 | 38 | 6 | 0 |
| 18 | 54 | 39 | 7 | 0 |
| 19 | 53 | 40 | 7 | 0 |
| 20 | 50 | 41 | 8 | 1 |
| 21 | 49 | 42 | 8 | 1 |
| 22 | 47 | 43 | 9 | 1 |
| 23 | 45 | 44 | 10 | 1 |
| 24 | 43 | 45 | 10 | 1 |
| 25 | 41 | 47 | 11 | 1 |
| 26 | 40 | 48 | 11 | 1 |
| 27 | 38 | 49 | 12 | 1 |
| 28 | 36 | 51 | 12 | 1 |
| 29 | 35 | 50 | 13 | 2 |
| 30 | 34 | 52 | 13 | 1 |
| 31 | 33 | 52 | 14 | 1 |
Wind in May
Winds average 16 km/h in May.
Across May, daily wind ranges from about 15 km/h on the calmest days to 16 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 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| 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 | 16 | light breeze |
| 13 | 16 | light breeze |
| 14 | 16 | light breeze |
| 15 | 16 | light breeze |
| 16 | 16 | light breeze |
| 17 | 16 | light breeze |
| 18 | 15 | light breeze |
| 19 | 15 | light breeze |
| 20 | 15 | light breeze |
| 21 | 15 | light breeze |
| 22 | 15 | light breeze |
| 23 | 15 | light breeze |
| 24 | 15 | light breeze |
| 25 | 15 | light breeze |
| 26 | 15 | light breeze |
| 27 | 15 | light breeze |
| 28 | 15 | light breeze |
| 29 | 15 | light breeze |
| 30 | 15 | light breeze |
| 31 | 15 | light breeze |
Sunrise & sunset in May
Daylight runs from about 13 h 42 min at the start of May to 14 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 60 minutes over May. Sunrise moves from 5:39 AM to 5:10 AM, and sunset from 7:24 PM to 7:54 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) | 13.7 | 13.8 | 13.8 | 13.9 | 13.9 | 13.9 | 14.0 | 14.0 | 14.1 | 14.1 | 14.1 | 14.2 | 14.2 | 14.2 | 14.3 | 14.3 | 14.3 | 14.4 | 14.4 | 14.4 | 14.5 | 14.5 | 14.5 | 14.5 | 14.6 | 14.6 | 14.6 | 14.7 | 14.7 | 14.7 | 14.7 |
| Sunrise (AM) | 5:39 | 5:38 | 5:37 | 5:35 | 5:34 | 5:33 | 5:32 | 5:30 | 5:29 | 5:28 | 5:27 | 5:26 | 5:25 | 5:24 | 5:23 | 5:22 | 5:21 | 5:20 | 5:19 | 5:18 | 5:17 | 5:16 | 5:16 | 5:15 | 5:14 | 5:13 | 5:13 | 5:12 | 5:11 | 5:11 | 5:10 |
| Sunset (PM) | 7:24 | 7:25 | 7:26 | 7:27 | 7:28 | 7:29 | 7:31 | 7:32 | 7:33 | 7:34 | 7:35 | 7:36 | 7:37 | 7:38 | 7:39 | 7:40 | 7:41 | 7:42 | 7:43 | 7:44 | 7:45 | 7:46 | 7:47 | 7:48 | 7:48 | 7:49 | 7:50 | 7:51 | 7:52 | 7:53 | 7:54 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.7 | 5:39 | 7:24 |
| 2 | 13.8 | 5:38 | 7:25 |
| 3 | 13.8 | 5:37 | 7:26 |
| 4 | 13.9 | 5:35 | 7:27 |
| 5 | 13.9 | 5:34 | 7:28 |
| 6 | 13.9 | 5:33 | 7:29 |
| 7 | 14.0 | 5:32 | 7:31 |
| 8 | 14.0 | 5:30 | 7:32 |
| 9 | 14.1 | 5:29 | 7:33 |
| 10 | 14.1 | 5:28 | 7:34 |
| 11 | 14.1 | 5:27 | 7:35 |
| 12 | 14.2 | 5:26 | 7:36 |
| 13 | 14.2 | 5:25 | 7:37 |
| 14 | 14.2 | 5:24 | 7:38 |
| 15 | 14.3 | 5:23 | 7:39 |
| 16 | 14.3 | 5:22 | 7:40 |
| 17 | 14.3 | 5:21 | 7:41 |
| 18 | 14.4 | 5:20 | 7:42 |
| 19 | 14.4 | 5:19 | 7:43 |
| 20 | 14.4 | 5:18 | 7:44 |
| 21 | 14.5 | 5:17 | 7:45 |
| 22 | 14.5 | 5:16 | 7:46 |
| 23 | 14.5 | 5:16 | 7:47 |
| 24 | 14.5 | 5:15 | 7:48 |
| 25 | 14.6 | 5:14 | 7:48 |
| 26 | 14.6 | 5:13 | 7:49 |
| 27 | 14.6 | 5:13 | 7:50 |
| 28 | 14.7 | 5:12 | 7:51 |
| 29 | 14.7 | 5:11 | 7:52 |
| 30 | 14.7 | 5:11 | 7:53 |
| 31 | 14.7 | 5:10 | 7:54 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 6.55 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 — May's 6.55 kWh/m² sits near the top of that range.
| 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) | 6.1 | 6.1 | 6.1 | 6.2 | 6.2 | 6.2 | 6.2 | 6.3 | 6.3 | 6.3 | 6.4 | 6.4 | 6.4 | 6.5 | 6.5 | 6.5 | 6.6 | 6.6 | 6.6 | 6.7 | 6.7 | 6.7 | 6.8 | 6.8 | 6.8 | 6.8 | 6.9 | 6.9 | 6.9 | 6.9 | 6.9 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.1 | Intense |
| 2 | 6.1 | Intense |
| 3 | 6.1 | Intense |
| 4 | 6.2 | Intense |
| 5 | 6.2 | Intense |
| 6 | 6.2 | Intense |
| 7 | 6.2 | Intense |
| 8 | 6.3 | Intense |
| 9 | 6.3 | Intense |
| 10 | 6.3 | Intense |
| 11 | 6.4 | Intense |
| 12 | 6.4 | Intense |
| 13 | 6.4 | Intense |
| 14 | 6.5 | Intense |
| 15 | 6.5 | Intense |
| 16 | 6.5 | Intense |
| 17 | 6.6 | Intense |
| 18 | 6.6 | Intense |
| 19 | 6.6 | Intense |
| 20 | 6.7 | Intense |
| 21 | 6.7 | Intense |
| 22 | 6.7 | Intense |
| 23 | 6.8 | Intense |
| 24 | 6.8 | Intense |
| 25 | 6.8 | Intense |
| 26 | 6.8 | Intense |
| 27 | 6.9 | Intense |
| 28 | 6.9 | Intense |
| 29 | 6.9 | Intense |
| 30 | 6.9 | Intense |
| 31 | 6.9 | Intense |
Hazard calendar for Leça do Bailio
In May, 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 May a good time to visit Leça do Bailio?
Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
May is a reasonable time to visit Leça do Bailio for sightseeing.
What to pack for Leça do Bailio in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Leça do Bailio sees daytime highs around 18°C and nights near 14°C. Pack sun protection. Worth having: rain gear. About 10 days see rain.
Sea temperature near Leça do Bailio in May
The nearest coast averages about 16°C in May — 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 May
Clear-sky midday UV in May peaks around 7 — 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 May
Average fine-particle pollution (PM2.5) through the year — so you can see where May 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).