Rosario de la Frontera weather in September
In September, Rosario de la Frontera sees average daytime highs of 24°C and overnight lows near 10°C, with 25 mm of rain across 5.1 wet days and about 11.8 hours of daylight. It is the 7th-warmest and 9th-wettest month of the year here.
Highs climb over the month, from about 23°C in the first days to 25°C by the end. The sky is clear or mostly clear about 58% of the time in September, and the air most often feels dry.
Daylight stretches from about 11 h 30 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Rosario de la Frontera's 3rd-clearest and 2nd-windiest month. For the whole year in context, see Rosario de la Frontera's year-round climate.
- Daytime high
- 24°
- 7th warmest
- Overnight low
- 10°
- 5th coldest
- Rainfall
- 25 mm
- 5.1 wet days
- Daylight
- 11 h 54 min
- 7:19 AM – 7:10 PM
- Cloud cover
- 39%
- 3rd clearest
- Wind
- 9 km/h
- 2nd windiest
- Solar energy
- 5.27 kWh/m²
- Travel score
- 8.0
- out of 10
Temperature in September
Highs climb over the month, from about 23°C in the first days to 25°C by the end.
A typical September day in Rosario de la Frontera reaches about 24°C in the afternoon and slips back to 10°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 31°C. Set against its neighbours, September runs about 2°C warmer than August and about 2°C cooler 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) | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 |
| Avg low (°C) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 23 | 9 |
| 2 | 23 | 9 |
| 3 | 23 | 9 |
| 4 | 23 | 9 |
| 5 | 23 | 9 |
| 6 | 23 | 9 |
| 7 | 23 | 9 |
| 8 | 23 | 9 |
| 9 | 23 | 10 |
| 10 | 24 | 10 |
| 11 | 24 | 10 |
| 12 | 24 | 10 |
| 13 | 24 | 10 |
| 14 | 24 | 10 |
| 15 | 24 | 10 |
| 16 | 24 | 10 |
| 17 | 24 | 10 |
| 18 | 24 | 10 |
| 19 | 24 | 10 |
| 20 | 24 | 11 |
| 21 | 24 | 11 |
| 22 | 24 | 11 |
| 23 | 24 | 11 |
| 24 | 24 | 11 |
| 25 | 25 | 11 |
| 26 | 25 | 11 |
| 27 | 25 | 11 |
| 28 | 25 | 12 |
| 29 | 25 | 12 |
| 30 | 25 | 12 |
Rosario de la Frontera weather by month
How September compares with the rest of the year at a glance. September is the 7th-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 | 27° / 18° | 244 | 20.2 | 13.4 | 4.9 |
| Feb | 26° / 17° | 199 | 18.1 | 12.9 | 5.1 |
| Mar | 24° / 16° | 169 | 18.3 | 12.2 | 5.5 |
| Apr | 22° / 13° | 91 | 13.4 | 11.4 | 6.1 |
| May | 20° / 10° | 42 | 9 | 10.8 | 6.4 |
| Jun | 18° / 7° | 18 | 5.3 | 10.4 | 6.9 |
| Jul | 19° / 5° | 13 | 4 | 10.6 | 7.4 |
| Aug | 22° / 7° | 15 | 3.5 | 11.1 | 8.1 |
| Sep | 24° / 10° | 25 | 5.1 | 11.8 | 8.0 |
| Oct | 26° / 14° | 78 | 11.7 | 12.6 | 6.6 |
| Nov | 26° / 15° | 122 | 14.8 | 13.3 | 5.8 |
| Dec | 27° / 17° | 196 | 18.5 | 13.6 | 5.2 |
Cloud cover in September
The sky is clear or mostly clear about 58% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 10% of September, with mostly cloudy or overcast conditions the remaining 32%. 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 (%) | 74 | 74 | 73 | 73 | 72 | 71 | 71 | 71 | 71 | 70 | 70 | 71 | 71 | 70 | 70 | 70 | 69 | 69 | 68 | 68 | 67 | 66 | 66 | 64 | 64 | 63 | 62 | 61 | 60 | 60 |
| Cloudier (%) | 26 | 26 | 27 | 27 | 28 | 29 | 29 | 29 | 29 | 30 | 30 | 29 | 29 | 30 | 30 | 30 | 31 | 31 | 32 | 32 | 33 | 34 | 34 | 36 | 36 | 37 | 38 | 39 | 40 | 40 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 74 | 26 |
| 2 | 74 | 26 |
| 3 | 73 | 27 |
| 4 | 73 | 27 |
| 5 | 72 | 28 |
| 6 | 71 | 29 |
| 7 | 71 | 29 |
| 8 | 71 | 29 |
| 9 | 71 | 29 |
| 10 | 70 | 30 |
| 11 | 70 | 30 |
| 12 | 71 | 29 |
| 13 | 71 | 29 |
| 14 | 70 | 30 |
| 15 | 70 | 30 |
| 16 | 70 | 30 |
| 17 | 69 | 31 |
| 18 | 69 | 31 |
| 19 | 68 | 32 |
| 20 | 68 | 32 |
| 21 | 67 | 33 |
| 22 | 66 | 34 |
| 23 | 66 | 34 |
| 24 | 64 | 36 |
| 25 | 64 | 36 |
| 26 | 63 | 37 |
| 27 | 62 | 38 |
| 28 | 61 | 39 |
| 29 | 60 | 40 |
| 30 | 60 | 40 |
Chance of precipitation in September
Rosario de la Frontera gets around 25 mm of rain over 5.1 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 18% and peaks near 27% 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 (%) | 12 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 16 | 16 | 17 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 27 |
| Rain chance (%) | |
|---|---|
| 1 | 12 |
| 2 | 13 |
| 3 | 13 |
| 4 | 13 |
| 5 | 14 |
| 6 | 14 |
| 7 | 14 |
| 8 | 14 |
| 9 | 14 |
| 10 | 14 |
| 11 | 14 |
| 12 | 14 |
| 13 | 14 |
| 14 | 15 |
| 15 | 15 |
| 16 | 16 |
| 17 | 16 |
| 18 | 17 |
| 19 | 17 |
| 20 | 18 |
| 21 | 19 |
| 22 | 20 |
| 23 | 21 |
| 24 | 22 |
| 25 | 23 |
| 26 | 24 |
| 27 | 25 |
| 28 | 26 |
| 29 | 27 |
| 30 | 27 |
Humidity in September
Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 96 | 96 | 96 | 96 | 96 | 96 | 96 | 96 | 96 | 96 | 96 | 96 | 96 | 96 | 95 | 95 | 95 | 94 | 94 | 93 | 93 | 92 | 91 | 90 | 89 | 89 | 88 | 88 | 88 | 86 |
| Comfortable (%) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 9 | 9 | 10 | 10 | 11 | 11 | 11 | 12 |
| Humid (%) | 0 | 0 | 0 | 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 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 96 | 4 | 0 |
| 2 | 96 | 4 | 0 |
| 3 | 96 | 4 | 0 |
| 4 | 96 | 4 | 0 |
| 5 | 96 | 4 | 0 |
| 6 | 96 | 4 | 0 |
| 7 | 96 | 4 | 0 |
| 8 | 96 | 4 | 0 |
| 9 | 96 | 4 | 0 |
| 10 | 96 | 4 | 0 |
| 11 | 96 | 4 | 0 |
| 12 | 96 | 4 | 0 |
| 13 | 96 | 4 | 0 |
| 14 | 96 | 4 | 0 |
| 15 | 95 | 5 | 0 |
| 16 | 95 | 5 | 0 |
| 17 | 95 | 5 | 0 |
| 18 | 94 | 6 | 0 |
| 19 | 94 | 6 | 0 |
| 20 | 93 | 7 | 0 |
| 21 | 93 | 7 | 0 |
| 22 | 92 | 8 | 0 |
| 23 | 91 | 9 | 0 |
| 24 | 90 | 9 | 1 |
| 25 | 89 | 10 | 1 |
| 26 | 89 | 10 | 1 |
| 27 | 88 | 11 | 1 |
| 28 | 88 | 11 | 1 |
| 29 | 88 | 11 | 1 |
| 30 | 86 | 12 | 2 |
Wind in September
Winds average 9 km/h in September.
Across September, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| 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 |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 8 | calm |
| 2 | 8 | calm |
| 3 | 8 | calm |
| 4 | 8 | calm |
| 5 | 8 | calm |
| 6 | 8 | calm |
| 7 | 8 | calm |
| 8 | 8 | calm |
| 9 | 8 | calm |
| 10 | 8 | calm |
| 11 | 8 | calm |
| 12 | 8 | calm |
| 13 | 9 | calm |
| 14 | 9 | calm |
| 15 | 9 | calm |
| 16 | 9 | calm |
| 17 | 9 | calm |
| 18 | 9 | calm |
| 19 | 9 | calm |
| 20 | 9 | calm |
| 21 | 9 | calm |
| 22 | 9 | calm |
| 23 | 9 | calm |
| 24 | 9 | calm |
| 25 | 9 | calm |
| 26 | 9 | calm |
| 27 | 9 | calm |
| 28 | 9 | calm |
| 29 | 9 | calm |
| 30 | 9 | calm |
Sunrise & sunset in September
Daylight runs from about 11 h 30 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 42 minutes over September. Sunrise moves from 7:36 AM to 7:03 AM, and sunset from 7:04 PM to 7:16 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) | 11.5 | 11.5 | 11.5 | 11.5 | 11.6 | 11.6 | 11.6 | 11.6 | 11.7 | 11.7 | 11.7 | 11.7 | 11.8 | 11.8 | 11.8 | 11.9 | 11.9 | 11.9 | 11.9 | 12.0 | 12.0 | 12.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 | 12.2 |
| Sunrise (AM) | 7:36 | 7:34 | 7:33 | 7:32 | 7:31 | 7:30 | 7:29 | 7:28 | 7:27 | 7:26 | 7:24 | 7:23 | 7:22 | 7:21 | 7:20 | 7:19 | 7:18 | 7:16 | 7:15 | 7:14 | 7:13 | 7:12 | 7:11 | 7:10 | 7:08 | 7:07 | 7:06 | 7:05 | 7:04 | 7:03 |
| Sunset (PM) | 7:04 | 7:04 | 7:04 | 7:05 | 7:05 | 7:06 | 7:06 | 7:07 | 7:07 | 7:07 | 7:08 | 7:08 | 7:09 | 7:09 | 7:09 | 7:10 | 7:10 | 7:11 | 7:11 | 7:11 | 7:12 | 7:12 | 7:13 | 7:13 | 7:13 | 7:14 | 7:14 | 7:15 | 7:15 | 7:16 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.5 | 7:36 | 7:04 |
| 2 | 11.5 | 7:34 | 7:04 |
| 3 | 11.5 | 7:33 | 7:04 |
| 4 | 11.5 | 7:32 | 7:05 |
| 5 | 11.6 | 7:31 | 7:05 |
| 6 | 11.6 | 7:30 | 7:06 |
| 7 | 11.6 | 7:29 | 7:06 |
| 8 | 11.6 | 7:28 | 7:07 |
| 9 | 11.7 | 7:27 | 7:07 |
| 10 | 11.7 | 7:26 | 7:07 |
| 11 | 11.7 | 7:24 | 7:08 |
| 12 | 11.7 | 7:23 | 7:08 |
| 13 | 11.8 | 7:22 | 7:09 |
| 14 | 11.8 | 7:21 | 7:09 |
| 15 | 11.8 | 7:20 | 7:09 |
| 16 | 11.9 | 7:19 | 7:10 |
| 17 | 11.9 | 7:18 | 7:10 |
| 18 | 11.9 | 7:16 | 7:11 |
| 19 | 11.9 | 7:15 | 7:11 |
| 20 | 12.0 | 7:14 | 7:11 |
| 21 | 12.0 | 7:13 | 7:12 |
| 22 | 12.0 | 7:12 | 7:12 |
| 23 | 12.0 | 7:11 | 7:13 |
| 24 | 12.1 | 7:10 | 7:13 |
| 25 | 12.1 | 7:08 | 7:13 |
| 26 | 12.1 | 7:07 | 7:14 |
| 27 | 12.1 | 7:06 | 7:14 |
| 28 | 12.2 | 7:05 | 7:15 |
| 29 | 12.2 | 7:04 | 7:15 |
| 30 | 12.2 | 7:03 | 7:16 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 5.27 kWh/m².
For context, solar energy here swings from a low near 3.16 kWh/m² to a high of 5.87 kWh/m² in December across the year — September's 5.27 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) | 5.0 | 5.0 | 5.0 | 5.0 | 5.1 | 5.1 | 5.1 | 5.1 | 5.2 | 5.2 | 5.2 | 5.2 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 |
| 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 | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.0 | Bright |
| 2 | 5.0 | Bright |
| 3 | 5.0 | Bright |
| 4 | 5.0 | Bright |
| 5 | 5.1 | Bright |
| 6 | 5.1 | Bright |
| 7 | 5.1 | Bright |
| 8 | 5.1 | Bright |
| 9 | 5.2 | Bright |
| 10 | 5.2 | Bright |
| 11 | 5.2 | Bright |
| 12 | 5.2 | Bright |
| 13 | 5.3 | Bright |
| 14 | 5.3 | Bright |
| 15 | 5.3 | Bright |
| 16 | 5.3 | Bright |
| 17 | 5.3 | Bright |
| 18 | 5.4 | Bright |
| 19 | 5.4 | Bright |
| 20 | 5.4 | Bright |
| 21 | 5.4 | Bright |
| 22 | 5.4 | Bright |
| 23 | 5.4 | Bright |
| 24 | 5.4 | Bright |
| 25 | 5.4 | Bright |
| 26 | 5.4 | Bright |
| 27 | 5.4 | Bright |
| 28 | 5.4 | Bright |
| 29 | 5.4 | Bright |
| 30 | 5.4 | Bright |
Hazard calendar for Rosario de la Frontera
None of Rosario de la Frontera's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Rosario de la Frontera's monsoon runs November–March, when most of the year's rain falls.
Is September a good time to visit Rosario de la Frontera?
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 Rosario de la Frontera for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Rosario de la Frontera in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Rosario de la Frontera sees daytime highs around 24°C and nights near 10°C. Worth packing: light clothes and sun protection. About 5 days see rain.
UV index in Rosario de la Frontera in September
Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Rosario de la Frontera peaks around January 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 5 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 15 | 15 | 13 | 8 | 6 | 5 | 5 | 7 | 9 | 12 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate | High | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 13 | Extreme |
| Apr | 8 | Very high |
| May | 6 | High |
| Jun | 5 | Moderate |
| Jul | 5 | Moderate |
| Aug | 7 | High |
| Sep | 9 | Very high |
| Oct | 12 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Where is Rosario de la Frontera?
Rosario de la Frontera sits at 25.8°S, 65.0°W, 768 m above sea level, in Argentina. The nearest listed city is San José de Metán, 34 km away.
Topography around Rosario de la Frontera
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rosario de la Frontera.
Within 3 km, the terrain around Rosario de la Frontera has only modest variations in elevation — a maximum elevation change of 88 m around an average of 791 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 975 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,471 m.
The land around Rosario de la Frontera is covered by cropland (50%) within 3 km, trees (53%) and cropland (38%) within 16 km, and trees (52%) within 80 km.
Argentina travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / I
- 220 V · 50 Hz
- Prices
- ≈ 46% of US
- price level, 2025
- GDP per capita
- $14,898
- 2025
- Happiness
- 6.4 / 10
- World Happiness, 2025
- Homicide rate
- 4.5
- per 100k, 2023
- Road deaths
- 14.1
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- High
- EF EPI 575
- 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 Rosario de la Frontera (-25.7986°, -64.9739°, elevation 768 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. 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).