Vialonga weather in September
In September, Vialonga sees average daytime highs of 26°C and overnight lows near 16°C, with 28 mm of rain across 4.4 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 9th-wettest month of the year here.
Highs ease over the month, from about 27°C in the first days to 25°C by the end. The sky is clear or mostly clear about 61% of the time in September, and the air most often feels comfortable.
Daylight stretches from about 12 h 54 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Vialonga's 4th-clearest and 11th-windiest month. For the whole year in context, see Vialonga's year-round climate.
- Daytime high
- 26°
- 3rd warmest
- Overnight low
- 16°
- 10th coldest
- Rainfall
- 28 mm
- 4.4 wet days
- Daylight
- 12 h 12 min
- 6:23 AM – 6:38 PM
- Cloud cover
- 35%
- 4th clearest
- Wind
- 12 km/h
- 11th windiest
- Solar energy
- 5.28 kWh/m²
- Travel score
- 8.0
- out of 10
Vialonga is human settlement in Portugal.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Highs ease over the month, from about 27°C in the first days to 25°C by the end.
A typical September day in Vialonga reaches about 26°C in the afternoon and slips back to 16°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 31°C. Set against its neighbours, September runs about 2°C cooler than August and about 4°C warmer than October.
| 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) | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 |
| Avg low (°C) | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 28 | 17 |
| 2 | 27 | 17 |
| 3 | 27 | 17 |
| 4 | 27 | 17 |
| 5 | 27 | 17 |
| 6 | 27 | 17 |
| 7 | 27 | 17 |
| 8 | 27 | 17 |
| 9 | 27 | 17 |
| 10 | 27 | 17 |
| 11 | 27 | 17 |
| 12 | 26 | 17 |
| 13 | 26 | 17 |
| 14 | 26 | 17 |
| 15 | 26 | 17 |
| 16 | 26 | 16 |
| 17 | 26 | 16 |
| 18 | 26 | 16 |
| 19 | 26 | 16 |
| 20 | 25 | 16 |
| 21 | 25 | 16 |
| 22 | 25 | 16 |
| 23 | 25 | 16 |
| 24 | 25 | 16 |
| 25 | 25 | 16 |
| 26 | 25 | 16 |
| 27 | 25 | 16 |
| 28 | 25 | 16 |
| 29 | 25 | 16 |
| 30 | 24 | 16 |
Vialonga weather by month
How September compares with the rest of the year at a glance. September is the 3rd-warmest and 9th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 14° / 8° | 61 | 8.4 | 9.6 | 4.4 |
| Feb | 15° / 8° | 47 | 7 | 10.5 | 5.0 |
| Mar | 18° / 10° | 51 | 7.6 | 11.7 | 6.2 |
| Apr | 19° / 11° | 51 | 8.6 | 13 | 6.5 |
| May | 22° / 13° | 42 | 6.3 | 14.1 | 7.5 |
| Jun | 25° / 16° | 10 | 2.4 | 14.7 | 8.5 |
| Jul | 28° / 17° | 2 | 0.7 | 14.4 | 8.2 |
| Aug | 28° / 17° | 5 | 1 | 13.5 | 7.9 |
| Sep | 26° / 16° | 28 | 4.4 | 12.3 | 8.0 |
| Oct | 22° / 14° | 75 | 8.8 | 11 | 7.0 |
| Nov | 17° / 11° | 75 | 9.2 | 9.9 | 5.8 |
| Dec | 15° / 9° | 73 | 8.9 | 9.3 | 4.6 |
Cloud cover in September
The sky is clear or mostly clear about 61% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 23%. Skies tend to cloud over 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 86 | 85 | 84 | 84 | 83 | 82 | 81 | 81 | 80 | 79 | 78 | 78 | 77 | 77 | 77 | 76 | 76 | 75 | 74 | 74 | 73 | 73 | 73 | 72 | 71 | 71 | 70 | 70 | 69 | 69 |
| Cloudier (%) | 14 | 15 | 16 | 16 | 17 | 18 | 19 | 19 | 20 | 21 | 22 | 22 | 23 | 23 | 23 | 24 | 24 | 25 | 26 | 26 | 27 | 27 | 27 | 28 | 29 | 29 | 30 | 30 | 31 | 31 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 86 | 14 |
| 2 | 85 | 15 |
| 3 | 84 | 16 |
| 4 | 84 | 16 |
| 5 | 83 | 17 |
| 6 | 82 | 18 |
| 7 | 81 | 19 |
| 8 | 81 | 19 |
| 9 | 80 | 20 |
| 10 | 79 | 21 |
| 11 | 78 | 22 |
| 12 | 78 | 22 |
| 13 | 77 | 23 |
| 14 | 77 | 23 |
| 15 | 77 | 23 |
| 16 | 76 | 24 |
| 17 | 76 | 24 |
| 18 | 75 | 25 |
| 19 | 74 | 26 |
| 20 | 74 | 26 |
| 21 | 73 | 27 |
| 22 | 73 | 27 |
| 23 | 73 | 27 |
| 24 | 72 | 28 |
| 25 | 71 | 29 |
| 26 | 71 | 29 |
| 27 | 70 | 30 |
| 28 | 70 | 30 |
| 29 | 69 | 31 |
| 30 | 69 | 31 |
Chance of precipitation in September
Vialonga gets around 28 mm of rain over 4.4 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 14% and peaks near 20% on the wettest days. The odds climb 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 5 | 6 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 14 | 15 | 16 | 17 | 18 | 18 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Rain chance (%) | |
|---|---|
| 1 | 5 |
| 2 | 6 |
| 3 | 6 |
| 4 | 6 |
| 5 | 7 |
| 6 | 7 |
| 7 | 8 |
| 8 | 8 |
| 9 | 9 |
| 10 | 10 |
| 11 | 11 |
| 12 | 12 |
| 13 | 13 |
| 14 | 14 |
| 15 | 14 |
| 16 | 15 |
| 17 | 16 |
| 18 | 17 |
| 19 | 18 |
| 20 | 18 |
| 21 | 19 |
| 22 | 19 |
| 23 | 20 |
| 24 | 20 |
| 25 | 20 |
| 26 | 20 |
| 27 | 20 |
| 28 | 20 |
| 29 | 20 |
| 30 | 20 |
Humidity in September
Most of September feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the comfortable band about 43% 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 (%) | 17 | 17 | 17 | 18 | 18 | 19 | 19 | 19 | 20 | 20 | 21 | 21 | 22 | 22 | 23 | 23 | 24 | 25 | 25 | 26 | 26 | 27 | 27 | 27 | 28 | 29 | 29 | 30 | 32 | 33 |
| Comfortable (%) | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 44 | 44 | 44 | 44 | 43 | 43 | 43 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 41 | 41 | 40 | 40 |
| Humid (%) | 35 | 35 | 35 | 35 | 34 | 34 | 34 | 33 | 33 | 33 | 33 | 32 | 32 | 32 | 32 | 31 | 31 | 31 | 30 | 30 | 29 | 29 | 29 | 28 | 28 | 27 | 26 | 26 | 25 | 24 |
| Muggy (%) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 17 | 45 | 35 | 3 |
| 2 | 17 | 45 | 35 | 3 |
| 3 | 17 | 45 | 35 | 3 |
| 4 | 18 | 45 | 35 | 3 |
| 5 | 18 | 45 | 34 | 3 |
| 6 | 19 | 45 | 34 | 3 |
| 7 | 19 | 45 | 34 | 3 |
| 8 | 19 | 44 | 33 | 3 |
| 9 | 20 | 44 | 33 | 3 |
| 10 | 20 | 44 | 33 | 3 |
| 11 | 21 | 44 | 33 | 3 |
| 12 | 21 | 43 | 32 | 3 |
| 13 | 22 | 43 | 32 | 3 |
| 14 | 22 | 43 | 32 | 3 |
| 15 | 23 | 42 | 32 | 3 |
| 16 | 23 | 42 | 31 | 3 |
| 17 | 24 | 42 | 31 | 3 |
| 18 | 25 | 42 | 31 | 3 |
| 19 | 25 | 42 | 30 | 3 |
| 20 | 26 | 42 | 30 | 3 |
| 21 | 26 | 42 | 29 | 3 |
| 22 | 27 | 42 | 29 | 3 |
| 23 | 27 | 42 | 29 | 3 |
| 24 | 27 | 42 | 28 | 3 |
| 25 | 28 | 42 | 28 | 3 |
| 26 | 29 | 42 | 27 | 3 |
| 27 | 29 | 41 | 26 | 3 |
| 28 | 30 | 41 | 26 | 3 |
| 29 | 32 | 40 | 25 | 3 |
| 30 | 33 | 40 | 24 | 3 |
Wind in September
Winds average 12 km/h in September.
Across September, daily wind ranges from about 12 km/h on the calmest days to 13 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) | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| 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 | 13 | light breeze |
| 2 | 13 | light breeze |
| 3 | 13 | light breeze |
| 4 | 13 | light breeze |
| 5 | 13 | light breeze |
| 6 | 13 | light breeze |
| 7 | 13 | light breeze |
| 8 | 13 | light breeze |
| 9 | 13 | light breeze |
| 10 | 13 | light breeze |
| 11 | 13 | light breeze |
| 12 | 12 | light breeze |
| 13 | 12 | light breeze |
| 14 | 12 | light breeze |
| 15 | 12 | light breeze |
| 16 | 12 | light breeze |
| 17 | 12 | light breeze |
| 18 | 12 | light breeze |
| 19 | 12 | light breeze |
| 20 | 12 | light breeze |
| 21 | 12 | light breeze |
| 22 | 12 | light breeze |
| 23 | 12 | light breeze |
| 24 | 12 | light breeze |
| 25 | 12 | light breeze |
| 26 | 12 | light breeze |
| 27 | 12 | light breeze |
| 28 | 12 | light breeze |
| 29 | 12 | light breeze |
| 30 | 12 | light breeze |
Sunrise & sunset in September
Daylight runs from about 12 h 54 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 78 minutes over September. Sunrise moves from 6:09 AM to 6:36 AM, and sunset from 7:03 PM to 6:15 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) | 12.9 | 12.8 | 12.8 | 12.8 | 12.7 | 12.7 | 12.6 | 12.6 | 12.6 | 12.5 | 12.5 | 12.4 | 12.4 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.0 | 12.0 | 11.9 | 11.9 | 11.9 | 11.8 | 11.8 | 11.7 | 11.7 | 11.6 |
| Sunrise (AM) | 6:09 | 6:10 | 6:11 | 6:12 | 6:13 | 6:14 | 6:15 | 6:16 | 6:17 | 6:18 | 6:19 | 6:19 | 6:20 | 6:21 | 6:22 | 6:23 | 6:24 | 6:25 | 6:26 | 6:27 | 6:28 | 6:29 | 6:30 | 6:31 | 6:32 | 6:33 | 6:33 | 6:34 | 6:35 | 6:36 |
| Sunset (PM) | 7:03 | 7:01 | 7:00 | 6:58 | 6:56 | 6:55 | 6:53 | 6:51 | 6:50 | 6:48 | 6:46 | 6:45 | 6:43 | 6:41 | 6:40 | 6:38 | 6:36 | 6:35 | 6:33 | 6:31 | 6:30 | 6:28 | 6:26 | 6:25 | 6:23 | 6:21 | 6:20 | 6:18 | 6:17 | 6:15 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.9 | 6:09 | 7:03 |
| 2 | 12.8 | 6:10 | 7:01 |
| 3 | 12.8 | 6:11 | 7:00 |
| 4 | 12.8 | 6:12 | 6:58 |
| 5 | 12.7 | 6:13 | 6:56 |
| 6 | 12.7 | 6:14 | 6:55 |
| 7 | 12.6 | 6:15 | 6:53 |
| 8 | 12.6 | 6:16 | 6:51 |
| 9 | 12.6 | 6:17 | 6:50 |
| 10 | 12.5 | 6:18 | 6:48 |
| 11 | 12.5 | 6:19 | 6:46 |
| 12 | 12.4 | 6:19 | 6:45 |
| 13 | 12.4 | 6:20 | 6:43 |
| 14 | 12.3 | 6:21 | 6:41 |
| 15 | 12.3 | 6:22 | 6:40 |
| 16 | 12.2 | 6:23 | 6:38 |
| 17 | 12.2 | 6:24 | 6:36 |
| 18 | 12.2 | 6:25 | 6:35 |
| 19 | 12.1 | 6:26 | 6:33 |
| 20 | 12.1 | 6:27 | 6:31 |
| 21 | 12.0 | 6:28 | 6:30 |
| 22 | 12.0 | 6:29 | 6:28 |
| 23 | 11.9 | 6:30 | 6:26 |
| 24 | 11.9 | 6:31 | 6:25 |
| 25 | 11.9 | 6:32 | 6:23 |
| 26 | 11.8 | 6:33 | 6:21 |
| 27 | 11.8 | 6:33 | 6:20 |
| 28 | 11.7 | 6:34 | 6:18 |
| 29 | 11.7 | 6:35 | 6:17 |
| 30 | 11.6 | 6:36 | 6:15 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 5.28 kWh/m².
For context, solar energy here swings from a low near 2.01 kWh/m² to a high of 7.63 kWh/m² in July across the year — September's 5.28 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) | 6.1 | 6.1 | 6.0 | 6.0 | 5.9 | 5.8 | 5.8 | 5.7 | 5.7 | 5.6 | 5.5 | 5.5 | 5.4 | 5.4 | 5.3 | 5.2 | 5.2 | 5.1 | 5.1 | 5.0 | 4.9 | 4.9 | 4.8 | 4.8 | 4.7 | 4.7 | 4.6 | 4.6 | 4.5 | 4.5 |
| Level | Intense | Intense | Intense | 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 |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.1 | Intense |
| 2 | 6.1 | Intense |
| 3 | 6.0 | Intense |
| 4 | 6.0 | Bright |
| 5 | 5.9 | Bright |
| 6 | 5.8 | Bright |
| 7 | 5.8 | Bright |
| 8 | 5.7 | Bright |
| 9 | 5.7 | Bright |
| 10 | 5.6 | Bright |
| 11 | 5.5 | Bright |
| 12 | 5.5 | Bright |
| 13 | 5.4 | Bright |
| 14 | 5.4 | Bright |
| 15 | 5.3 | Bright |
| 16 | 5.2 | Bright |
| 17 | 5.2 | Bright |
| 18 | 5.1 | Bright |
| 19 | 5.1 | Bright |
| 20 | 5.0 | Bright |
| 21 | 4.9 | Bright |
| 22 | 4.9 | Bright |
| 23 | 4.8 | Bright |
| 24 | 4.8 | Bright |
| 25 | 4.7 | Bright |
| 26 | 4.7 | Bright |
| 27 | 4.6 | Bright |
| 28 | 4.6 | Bright |
| 29 | 4.5 | Bright |
| 30 | 4.5 | Bright |
Is September a good time to visit Vialonga?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is one of the better times to visit Vialonga for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Vialonga in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Vialonga sees daytime highs around 26°C and nights near 16°C. Worth packing: light clothes and sun protection. About 4 days see rain.
Sea temperature near Vialonga in September
The nearest coast averages about 19°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 38 km away) is warmest in September at about 19°C and coldest in February near 15°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) | 15 | 15 | 15 | 15 | 16 | 18 | 18 | 19 | 19 | 18 | 17 | 16 |
| Comfort | Cool | Bracing | Bracing | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Cool |
| Feb | 15 | Bracing |
| Mar | 15 | Bracing |
| Apr | 15 | Cool |
| May | 16 | Cool |
| Jun | 18 | Cool |
| Jul | 18 | Cool |
| Aug | 19 | Cool |
| Sep | 19 | Cool |
| Oct | 18 | Cool |
| Nov | 17 | Cool |
| Dec | 16 | Cool |
UV index in Vialonga in September
Clear-sky midday UV in September 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 Vialonga peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 | 6 | 8 | 7 | 9 | 9 | 9 | 6 | 5 | 3 | 2 |
| Level | Low | Moderate | High | Very high | Very high | Very high | Very high | Very high | High | High | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 6 | High |
| Apr | 8 | Very high |
| May | 7 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 9 | Very high |
| Sep | 6 | High |
| Oct | 5 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Where is Vialonga?
Vialonga sits at 38.9°N, 9.1°W, 49 m above sea level, in Portugal. The nearest listed city is Póvoa de Santa Iria, 2.0 km away.
Topography around Vialonga
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Vialonga.
Within 3 km, the terrain around Vialonga has significant variations in elevation — a maximum elevation change of 349 m around an average of 86 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 440 m; within 80 km, large variations in elevation — a maximum elevation change of 656 m.
The land around Vialonga is covered by grassland (42%) and artificial surfaces (28%) within 3 km, grassland (32%) and water (22%) within 16 km, and water (37%), grassland (31%) and trees (21%) 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 Vialonga (38.8721°, -9.078°, elevation 49 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).