Arouca weather in May
In May, Arouca sees average daytime highs of 20°C and overnight lows near 10°C, with 129 mm of rain across 13.1 wet days and about 14.3 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.
Highs climb over the month, from about 18°C in the first days to 21°C by the end. The sky is clear or mostly clear about 29% 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 Arouca's 6th-clearest and 8th-windiest month. For the whole year in context, see Arouca's year-round climate.
- Daytime high
- 20°
- 5th warmest
- Overnight low
- 10°
- 7th coldest
- Rainfall
- 129 mm
- 13.1 wet days
- Daylight
- 14 h 18 min
- 5:21 AM – 7:38 PM
- Cloud cover
- 58%
- 6th clearest
- Wind
- 9 km/h
- 8th windiest
- Solar energy
- 6.2 kWh/m²
- Travel score
- 5.9
- out of 10
Temperature in May
Highs climb over the month, from about 18°C in the first days to 21°C by the end.
A typical May day in Arouca reaches about 20°C in the afternoon and slips back to 10°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 26°C. Set against its neighbours, May runs about 3°C warmer than April and about 3°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) | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 |
| Avg low (°C) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 18 | 9 |
| 2 | 18 | 9 |
| 3 | 18 | 9 |
| 4 | 18 | 9 |
| 5 | 18 | 9 |
| 6 | 18 | 9 |
| 7 | 19 | 9 |
| 8 | 19 | 9 |
| 9 | 19 | 9 |
| 10 | 19 | 10 |
| 11 | 19 | 10 |
| 12 | 19 | 10 |
| 13 | 19 | 10 |
| 14 | 19 | 10 |
| 15 | 20 | 10 |
| 16 | 20 | 10 |
| 17 | 20 | 10 |
| 18 | 20 | 10 |
| 19 | 20 | 11 |
| 20 | 20 | 11 |
| 21 | 20 | 11 |
| 22 | 20 | 11 |
| 23 | 21 | 11 |
| 24 | 21 | 11 |
| 25 | 21 | 11 |
| 26 | 21 | 11 |
| 27 | 21 | 11 |
| 28 | 21 | 12 |
| 29 | 21 | 12 |
| 30 | 21 | 12 |
| 31 | 21 | 12 |
Arouca weather by month
How May compares with the rest of the year at a glance. May is the 5th-warmest and 7th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 11° / 4° | 182 | 12.5 | 9.4 | 2.7 |
| Feb | 13° / 5° | 124 | 9.9 | 10.4 | 3.5 |
| Mar | 16° / 6° | 142 | 11.7 | 11.7 | 4.6 |
| Apr | 17° / 8° | 148 | 13.7 | 13.1 | 5.0 |
| May | 20° / 10° | 129 | 13.1 | 14.3 | 5.9 |
| Jun | 23° / 13° | 56 | 7.9 | 14.9 | 7.3 |
| Jul | 26° / 15° | 30 | 5 | 14.6 | 8.1 |
| Aug | 26° / 15° | 38 | 5.3 | 13.6 | 7.9 |
| Sep | 23° / 13° | 83 | 8.2 | 12.3 | 7.3 |
| Oct | 19° / 11° | 197 | 13.4 | 10.9 | 5.7 |
| Nov | 14° / 7° | 183 | 13.1 | 9.7 | 3.9 |
| Dec | 12° / 5° | 197 | 12.5 | 9.1 | 2.9 |
Cloud cover in May
The sky is clear or mostly clear about 29% of the time in May.
Beyond those clear spells, partly cloudy skies cover about 15% of May, with mostly cloudy or overcast conditions the remaining 55%. 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 (%) | 41 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 41 | 41 | 41 | 41 | 42 | 43 | 44 | 44 | 46 | 46 | 46 | 47 | 48 | 48 | 49 | 49 | 50 | 50 | 50 | 50 | 50 | 51 |
| Cloudier (%) | 59 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 59 | 59 | 59 | 59 | 58 | 57 | 56 | 56 | 54 | 54 | 54 | 53 | 52 | 52 | 51 | 51 | 50 | 50 | 50 | 50 | 50 | 49 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 41 | 59 |
| 2 | 40 | 60 |
| 3 | 40 | 60 |
| 4 | 40 | 60 |
| 5 | 40 | 60 |
| 6 | 40 | 60 |
| 7 | 40 | 60 |
| 8 | 40 | 60 |
| 9 | 40 | 60 |
| 10 | 41 | 59 |
| 11 | 41 | 59 |
| 12 | 41 | 59 |
| 13 | 41 | 59 |
| 14 | 42 | 58 |
| 15 | 43 | 57 |
| 16 | 44 | 56 |
| 17 | 44 | 56 |
| 18 | 46 | 54 |
| 19 | 46 | 54 |
| 20 | 46 | 54 |
| 21 | 47 | 53 |
| 22 | 48 | 52 |
| 23 | 48 | 52 |
| 24 | 49 | 51 |
| 25 | 49 | 51 |
| 26 | 50 | 50 |
| 27 | 50 | 50 |
| 28 | 50 | 50 |
| 29 | 50 | 50 |
| 30 | 50 | 50 |
| 31 | 51 | 49 |
Chance of precipitation in May
Arouca gets around 129 mm of rain over 13.1 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 42% and peaks near 45% 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 (%) | 43 | 44 | 44 | 44 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 44 | 44 | 44 | 43 | 43 | 42 | 42 | 42 | 41 | 41 | 40 | 40 | 39 | 39 | 39 | 38 | 38 | 37 | 37 |
| Rain chance (%) | |
|---|---|
| 1 | 43 |
| 2 | 44 |
| 3 | 44 |
| 4 | 44 |
| 5 | 45 |
| 6 | 45 |
| 7 | 45 |
| 8 | 45 |
| 9 | 45 |
| 10 | 45 |
| 11 | 45 |
| 12 | 45 |
| 13 | 44 |
| 14 | 44 |
| 15 | 44 |
| 16 | 43 |
| 17 | 43 |
| 18 | 42 |
| 19 | 42 |
| 20 | 42 |
| 21 | 41 |
| 22 | 41 |
| 23 | 40 |
| 24 | 40 |
| 25 | 39 |
| 26 | 39 |
| 27 | 39 |
| 28 | 38 |
| 29 | 38 |
| 30 | 37 |
| 31 | 37 |
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 84% 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 (%) | 94 | 93 | 93 | 92 | 91 | 91 | 90 | 90 | 89 | 89 | 88 | 88 | 87 | 87 | 86 | 86 | 84 | 84 | 83 | 82 | 81 | 81 | 79 | 78 | 76 | 76 | 75 | 74 | 73 | 72 | 71 |
| Comfortable (%) | 6 | 7 | 7 | 8 | 9 | 9 | 10 | 10 | 11 | 11 | 12 | 12 | 13 | 13 | 14 | 14 | 15 | 15 | 16 | 16 | 17 | 17 | 18 | 19 | 20 | 20 | 21 | 22 | 23 | 24 | 25 |
| Humid (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 94 | 6 | 0 |
| 2 | 93 | 7 | 0 |
| 3 | 93 | 7 | 0 |
| 4 | 92 | 8 | 0 |
| 5 | 91 | 9 | 0 |
| 6 | 91 | 9 | 0 |
| 7 | 90 | 10 | 0 |
| 8 | 90 | 10 | 0 |
| 9 | 89 | 11 | 0 |
| 10 | 89 | 11 | 0 |
| 11 | 88 | 12 | 0 |
| 12 | 88 | 12 | 0 |
| 13 | 87 | 13 | 0 |
| 14 | 87 | 13 | 0 |
| 15 | 86 | 14 | 0 |
| 16 | 86 | 14 | 0 |
| 17 | 84 | 15 | 1 |
| 18 | 84 | 15 | 1 |
| 19 | 83 | 16 | 1 |
| 20 | 82 | 16 | 2 |
| 21 | 81 | 17 | 2 |
| 22 | 81 | 17 | 2 |
| 23 | 79 | 18 | 3 |
| 24 | 78 | 19 | 3 |
| 25 | 76 | 20 | 4 |
| 26 | 76 | 20 | 4 |
| 27 | 75 | 21 | 4 |
| 28 | 74 | 22 | 4 |
| 29 | 73 | 23 | 4 |
| 30 | 72 | 24 | 4 |
| 31 | 71 | 25 | 4 |
Wind in May
Winds average 9 km/h in May.
Across May, daily wind ranges from about 8 km/h on the calmest days to 9 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) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 9 | calm |
| 2 | 9 | calm |
| 3 | 9 | calm |
| 4 | 9 | calm |
| 5 | 9 | calm |
| 6 | 9 | calm |
| 7 | 9 | calm |
| 8 | 9 | calm |
| 9 | 9 | calm |
| 10 | 9 | calm |
| 11 | 9 | calm |
| 12 | 9 | calm |
| 13 | 9 | calm |
| 14 | 9 | calm |
| 15 | 9 | calm |
| 16 | 9 | calm |
| 17 | 9 | calm |
| 18 | 9 | calm |
| 19 | 8 | calm |
| 20 | 8 | calm |
| 21 | 8 | calm |
| 22 | 8 | calm |
| 23 | 8 | calm |
| 24 | 8 | calm |
| 25 | 8 | calm |
| 26 | 8 | calm |
| 27 | 8 | calm |
| 28 | 8 | calm |
| 29 | 8 | calm |
| 30 | 8 | calm |
| 31 | 8 | calm |
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 5:38 AM to 5:10 AM, and sunset from 7:22 PM to 7:51 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 | 13.8 | 13.9 | 13.9 | 14.0 | 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 | 14.6 | 14.7 | 14.7 |
| Sunrise (AM) | 5:38 | 5:37 | 5:36 | 5:34 | 5:33 | 5:32 | 5:31 | 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 | 5:10 |
| Sunset (PM) | 7:22 | 7:23 | 7:24 | 7:25 | 7:26 | 7:27 | 7:28 | 7:29 | 7:30 | 7:32 | 7:33 | 7:34 | 7:35 | 7:36 | 7:37 | 7:38 | 7:39 | 7:40 | 7:41 | 7:41 | 7:42 | 7:43 | 7:44 | 7:45 | 7:46 | 7:47 | 7:48 | 7:49 | 7:50 | 7:50 | 7:51 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.7 | 5:38 | 7:22 |
| 2 | 13.8 | 5:37 | 7:23 |
| 3 | 13.8 | 5:36 | 7:24 |
| 4 | 13.8 | 5:34 | 7:25 |
| 5 | 13.9 | 5:33 | 7:26 |
| 6 | 13.9 | 5:32 | 7:27 |
| 7 | 14.0 | 5:31 | 7:28 |
| 8 | 14.0 | 5:29 | 7:29 |
| 9 | 14.0 | 5:28 | 7:30 |
| 10 | 14.1 | 5:27 | 7:32 |
| 11 | 14.1 | 5:26 | 7:33 |
| 12 | 14.1 | 5:25 | 7:34 |
| 13 | 14.2 | 5:24 | 7:35 |
| 14 | 14.2 | 5:23 | 7:36 |
| 15 | 14.2 | 5:22 | 7:37 |
| 16 | 14.3 | 5:21 | 7:38 |
| 17 | 14.3 | 5:20 | 7:39 |
| 18 | 14.3 | 5:19 | 7:40 |
| 19 | 14.4 | 5:18 | 7:41 |
| 20 | 14.4 | 5:17 | 7:41 |
| 21 | 14.4 | 5:16 | 7:42 |
| 22 | 14.5 | 5:16 | 7:43 |
| 23 | 14.5 | 5:15 | 7:44 |
| 24 | 14.5 | 5:14 | 7:45 |
| 25 | 14.5 | 5:13 | 7:46 |
| 26 | 14.6 | 5:13 | 7:47 |
| 27 | 14.6 | 5:12 | 7:48 |
| 28 | 14.6 | 5:11 | 7:49 |
| 29 | 14.6 | 5:11 | 7:50 |
| 30 | 14.7 | 5:10 | 7:50 |
| 31 | 14.7 | 5:10 | 7:51 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 6.2 kWh/m².
For context, solar energy here swings from a low near 1.65 kWh/m² to a high of 7.22 kWh/m² in July across the year — May's 6.2 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.7 | 5.8 | 5.8 | 5.8 | 5.8 | 5.9 | 5.9 | 5.9 | 6.0 | 6.0 | 6.0 | 6.1 | 6.1 | 6.1 | 6.2 | 6.2 | 6.2 | 6.3 | 6.3 | 6.3 | 6.4 | 6.4 | 6.4 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.6 | 6.6 | 6.6 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | 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 | 5.7 | Bright |
| 2 | 5.8 | Bright |
| 3 | 5.8 | Bright |
| 4 | 5.8 | Bright |
| 5 | 5.8 | Bright |
| 6 | 5.9 | Bright |
| 7 | 5.9 | Bright |
| 8 | 5.9 | Bright |
| 9 | 6.0 | Bright |
| 10 | 6.0 | Intense |
| 11 | 6.0 | Intense |
| 12 | 6.1 | Intense |
| 13 | 6.1 | Intense |
| 14 | 6.1 | Intense |
| 15 | 6.2 | Intense |
| 16 | 6.2 | Intense |
| 17 | 6.2 | Intense |
| 18 | 6.3 | Intense |
| 19 | 6.3 | Intense |
| 20 | 6.3 | Intense |
| 21 | 6.4 | Intense |
| 22 | 6.4 | Intense |
| 23 | 6.4 | Intense |
| 24 | 6.5 | Intense |
| 25 | 6.5 | Intense |
| 26 | 6.5 | Intense |
| 27 | 6.5 | Intense |
| 28 | 6.5 | Intense |
| 29 | 6.6 | Intense |
| 30 | 6.6 | Intense |
| 31 | 6.6 | Intense |
Hazard calendar for Arouca
In May, Arouca sits inside its rainy season season. The full year is below, with each hazard's peak months called out.
Arouca's rainy season runs October–May, when most of the year's rain falls.
Is May a good time to visit Arouca?
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 Arouca for sightseeing.
What to pack for Arouca in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Arouca sees daytime highs around 20°C and nights near 10°C. Pack sun protection. Worth having: rain gear. About 13 days see rain.
Sea temperature near Arouca 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 at the nearest coast (about 39 km away) 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 Arouca 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 Arouca peaks around July 12 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 | 5 | 2 | 2 |
| Level | Low | Moderate | High | High | High | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | High |
| Apr | 6 | High |
| May | 7 | High |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 8 | Very high |
| Sep | 5 | High |
| Oct | 5 | Moderate |
| Nov | 2 | Moderate |
| Dec | 2 | Low |
Air quality in Arouca 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 Arouca is worst in August — around 25 µg/m³ PM2.5 (moderate), about 3.4× 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) | 10 | 11 | 14 | 12 | 8 | 9 | 9 | 25 | 24 | 18 | 7 | 7 |
| Level | Good | Good | Moderate | Moderate | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 11 | Good |
| Mar | 14 | Moderate |
| Apr | 12 | Moderate |
| May | 8 | Good |
| Jun | 9 | Good |
| Jul | 9 | Good |
| Aug | 25 | Moderate |
| Sep | 24 | Moderate |
| Oct | 18 | Moderate |
| Nov | 7 | Good |
| Dec | 7 | Good |
Where is Arouca?
Arouca sits at 40.9°N, 8.2°W, 313 m above sea level, in Portugal. The nearest listed city is São João da Madeira, 21 km away.
Topography around Arouca
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Arouca.
Within 3 km, the terrain around Arouca has significant variations in elevation — a maximum elevation change of 542 m around an average of 452 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,202 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,714 m.
The land around Arouca is covered by trees (65%) and grassland (27%) within 3 km, trees (62%) and grassland (34%) within 16 km, and trees (42%) and grassland (33%) 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 Arouca (40.9306°, -8.2449°, elevation 313 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).