San Isidro weather in September
In September, San Isidro sees average daytime highs of 21°C and overnight lows near 8°C, with 32 mm of precipitation across 5.4 wet days and about 11.8 hours of daylight. It is the 7th-warmest and 9th-wettest month of the year here.
Day-to-day highs hold fairly steady near 21°C through the month. The sky is clear or mostly clear about 62% of the time in September, and the air most often feels dry.
Daylight stretches from about 11 h 24 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is San Isidro's 3rd-clearest and 2nd-windiest month. For the whole year in context, see San Isidro's year-round climate.
- Daytime high
- 21°
- 7th warmest
- Overnight low
- 8°
- 5th coldest
- Precipitation
- 32 mm
- 5.4 wet days
- Daylight
- 11 h 48 min
- 7:22 AM – 7:12 PM
- Cloud cover
- 34%
- 3rd clearest
- Wind
- 8 km/h
- 2nd windiest
- Solar energy
- 5.59 kWh/m²
- Travel score
- 7.6
- out of 10
San Isidro is city in Valle Viejo Department, Catamarca Province, Argentina.
- Founded
- 1698
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Day-to-day highs hold fairly steady near 21°C through the month.
A typical September day in San Isidro reaches about 21°C in the afternoon and slips back to 8°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 28°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) | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 |
| Avg low (°C) | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 20 | 6 |
| 2 | 20 | 7 |
| 3 | 20 | 7 |
| 4 | 21 | 7 |
| 5 | 21 | 7 |
| 6 | 21 | 7 |
| 7 | 21 | 7 |
| 8 | 21 | 7 |
| 9 | 21 | 7 |
| 10 | 21 | 7 |
| 11 | 21 | 7 |
| 12 | 21 | 7 |
| 13 | 21 | 7 |
| 14 | 21 | 8 |
| 15 | 21 | 8 |
| 16 | 21 | 8 |
| 17 | 21 | 8 |
| 18 | 21 | 8 |
| 19 | 21 | 8 |
| 20 | 21 | 8 |
| 21 | 21 | 8 |
| 22 | 21 | 8 |
| 23 | 22 | 9 |
| 24 | 22 | 9 |
| 25 | 22 | 9 |
| 26 | 22 | 9 |
| 27 | 22 | 9 |
| 28 | 22 | 9 |
| 29 | 22 | 9 |
| 30 | 22 | 9 |
San Isidro 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 | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 26° / 17° | 167 | 16.7 | 0 | 13.6 | 5.7 |
| Feb | 25° / 16° | 117 | 13.7 | 0 | 13 | 6.1 |
| Mar | 23° / 15° | 109 | 13.2 | 0 | 12.2 | 6.4 |
| Apr | 21° / 11° | 65 | 9.7 | 0.2 | 11.3 | 6.6 |
| May | 18° / 7° | 37 | 6.9 | 0.2 | 10.6 | 6.5 |
| Jun | 17° / 4° | 20 | 4.1 | 0.4 | 10.2 | 6.3 |
| Jul | 16° / 2° | 15 | 3.3 | 0.9 | 10.4 | 6.5 |
| Aug | 19° / 5° | 17 | 3.3 | 0.4 | 11 | 7.6 |
| Sep | 21° / 8° | 32 | 5.4 | 0.4 | 11.8 | 7.6 |
| Oct | 23° / 11° | 65 | 10 | 0 | 12.7 | 7.2 |
| Nov | 24° / 14° | 98 | 12.9 | 0 | 13.4 | 6.6 |
| Dec | 26° / 16° | 129 | 15.4 | 0 | 13.8 | 6.0 |
Cloud cover in September
The sky is clear or mostly clear about 62% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 25%.
| 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 (%) | 77 | 77 | 76 | 76 | 76 | 75 | 75 | 76 | 76 | 76 | 77 | 77 | 78 | 78 | 77 | 77 | 77 | 77 | 77 | 77 | 75 | 75 | 74 | 74 | 73 | 72 | 71 | 71 | 70 | 70 |
| Cloudier (%) | 23 | 23 | 24 | 24 | 24 | 25 | 25 | 24 | 24 | 24 | 23 | 23 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 25 | 25 | 26 | 26 | 27 | 28 | 29 | 29 | 30 | 30 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 77 | 23 |
| 2 | 77 | 23 |
| 3 | 76 | 24 |
| 4 | 76 | 24 |
| 5 | 76 | 24 |
| 6 | 75 | 25 |
| 7 | 75 | 25 |
| 8 | 76 | 24 |
| 9 | 76 | 24 |
| 10 | 76 | 24 |
| 11 | 77 | 23 |
| 12 | 77 | 23 |
| 13 | 78 | 22 |
| 14 | 78 | 22 |
| 15 | 77 | 23 |
| 16 | 77 | 23 |
| 17 | 77 | 23 |
| 18 | 77 | 23 |
| 19 | 77 | 23 |
| 20 | 77 | 23 |
| 21 | 75 | 25 |
| 22 | 75 | 25 |
| 23 | 74 | 26 |
| 24 | 74 | 26 |
| 25 | 73 | 27 |
| 26 | 72 | 28 |
| 27 | 71 | 29 |
| 28 | 71 | 29 |
| 29 | 70 | 30 |
| 30 | 70 | 30 |
Chance of precipitation in September
San Isidro gets around 32 mm of rain and snow over 5.4 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 18% and peaks near 24% on the wettest days, and about 0 day brings snow. 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 (%) | 14 | 14 | 14 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 18 | 18 | 19 | 19 | 20 | 20 | 21 | 21 | 22 | 23 | 23 | 24 | 24 |
| Snow chance (%) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 14 | 2 |
| 2 | 14 | 2 |
| 3 | 14 | 2 |
| 4 | 15 | 2 |
| 5 | 15 | 2 |
| 6 | 16 | 2 |
| 7 | 16 | 2 |
| 8 | 16 | 2 |
| 9 | 16 | 2 |
| 10 | 16 | 1 |
| 11 | 16 | 1 |
| 12 | 16 | 1 |
| 13 | 16 | 1 |
| 14 | 16 | 1 |
| 15 | 17 | 1 |
| 16 | 17 | 1 |
| 17 | 17 | 1 |
| 18 | 18 | 1 |
| 19 | 18 | 1 |
| 20 | 19 | 1 |
| 21 | 19 | 1 |
| 22 | 20 | 1 |
| 23 | 20 | 1 |
| 24 | 21 | 1 |
| 25 | 21 | 1 |
| 26 | 22 | 1 |
| 27 | 23 | 1 |
| 28 | 23 | 1 |
| 29 | 24 | 0 |
| 30 | 24 | 0 |
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 98% 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 (%) | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 98 | 98 | 98 | 98 | 98 | 98 | 97 | 97 | 97 | 96 | 96 | 95 | 95 | 95 |
| Comfortable (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 5 | 5 | 5 |
| Dry (%) | Comfortable (%) | |
|---|---|---|
| 1 | 99 | 1 |
| 2 | 99 | 1 |
| 3 | 99 | 1 |
| 4 | 99 | 1 |
| 5 | 99 | 1 |
| 6 | 99 | 1 |
| 7 | 99 | 1 |
| 8 | 99 | 1 |
| 9 | 99 | 1 |
| 10 | 99 | 1 |
| 11 | 99 | 1 |
| 12 | 99 | 1 |
| 13 | 99 | 1 |
| 14 | 99 | 1 |
| 15 | 99 | 1 |
| 16 | 99 | 1 |
| 17 | 98 | 2 |
| 18 | 98 | 2 |
| 19 | 98 | 2 |
| 20 | 98 | 2 |
| 21 | 98 | 2 |
| 22 | 98 | 2 |
| 23 | 97 | 3 |
| 24 | 97 | 3 |
| 25 | 97 | 3 |
| 26 | 96 | 4 |
| 27 | 96 | 4 |
| 28 | 95 | 5 |
| 29 | 95 | 5 |
| 30 | 95 | 5 |
Wind in September
Winds average 8 km/h in September.
Across September, daily wind ranges from about 8 km/h on the calmest days to 8 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 | 8 | 8 | 8 | 8 | 8 | 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 |
| 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 | 8 | calm |
| 14 | 8 | calm |
| 15 | 8 | calm |
| 16 | 8 | calm |
| 17 | 8 | calm |
| 18 | 8 | 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 |
Sunrise & sunset in September
Daylight runs from about 11 h 24 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 48 minutes over September. Sunrise moves from 7:41 AM to 7:05 AM, and sunset from 7:05 PM to 7:19 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) | 11.4 | 11.4 | 11.5 | 11.5 | 11.5 | 11.5 | 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 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 | 12.2 | 12.2 |
| Sunrise (AM) | 7:41 | 7:39 | 7:38 | 7:37 | 7:36 | 7:35 | 7:33 | 7:32 | 7:31 | 7:30 | 7:28 | 7:27 | 7:26 | 7:25 | 7:23 | 7:22 | 7:21 | 7:20 | 7:19 | 7:17 | 7:16 | 7:15 | 7:14 | 7:12 | 7:11 | 7:10 | 7:09 | 7:07 | 7:06 | 7:05 |
| Sunset (PM) | 7:05 | 7:05 | 7:06 | 7:06 | 7:07 | 7:07 | 7:08 | 7:08 | 7:09 | 7:09 | 7:10 | 7:10 | 7:11 | 7:11 | 7:12 | 7:12 | 7:13 | 7:13 | 7:14 | 7:14 | 7:15 | 7:15 | 7:16 | 7:16 | 7:17 | 7:17 | 7:18 | 7:18 | 7:19 | 7:19 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.4 | 7:41 | 7:05 |
| 2 | 11.4 | 7:39 | 7:05 |
| 3 | 11.5 | 7:38 | 7:06 |
| 4 | 11.5 | 7:37 | 7:06 |
| 5 | 11.5 | 7:36 | 7:07 |
| 6 | 11.5 | 7:35 | 7:07 |
| 7 | 11.6 | 7:33 | 7:08 |
| 8 | 11.6 | 7:32 | 7:08 |
| 9 | 11.6 | 7:31 | 7:09 |
| 10 | 11.7 | 7:30 | 7:09 |
| 11 | 11.7 | 7:28 | 7:10 |
| 12 | 11.7 | 7:27 | 7:10 |
| 13 | 11.7 | 7:26 | 7:11 |
| 14 | 11.8 | 7:25 | 7:11 |
| 15 | 11.8 | 7:23 | 7:12 |
| 16 | 11.8 | 7:22 | 7:12 |
| 17 | 11.9 | 7:21 | 7:13 |
| 18 | 11.9 | 7:20 | 7:13 |
| 19 | 11.9 | 7:19 | 7:14 |
| 20 | 11.9 | 7:17 | 7:14 |
| 21 | 12.0 | 7:16 | 7:15 |
| 22 | 12.0 | 7:15 | 7:15 |
| 23 | 12.0 | 7:14 | 7:16 |
| 24 | 12.1 | 7:12 | 7:16 |
| 25 | 12.1 | 7:11 | 7:17 |
| 26 | 12.1 | 7:10 | 7:17 |
| 27 | 12.2 | 7:09 | 7:18 |
| 28 | 12.2 | 7:07 | 7:18 |
| 29 | 12.2 | 7:06 | 7:19 |
| 30 | 12.2 | 7:05 | 7:19 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 5.59 kWh/m².
For context, solar energy here swings from a low near 3.4 kWh/m² to a high of 6.6 kWh/m² in December across the year — September's 5.59 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) | 5.2 | 5.2 | 5.2 | 5.2 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.5 | 5.5 | 5.5 | 5.6 | 5.6 | 5.6 | 5.7 | 5.7 | 5.7 | 5.7 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.9 | 5.9 | 5.9 | 5.9 |
| 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 | 5.2 | Bright |
| 2 | 5.2 | Bright |
| 3 | 5.2 | Bright |
| 4 | 5.2 | Bright |
| 5 | 5.3 | Bright |
| 6 | 5.3 | Bright |
| 7 | 5.3 | Bright |
| 8 | 5.4 | Bright |
| 9 | 5.4 | Bright |
| 10 | 5.5 | Bright |
| 11 | 5.5 | Bright |
| 12 | 5.5 | Bright |
| 13 | 5.6 | Bright |
| 14 | 5.6 | Bright |
| 15 | 5.6 | Bright |
| 16 | 5.7 | Bright |
| 17 | 5.7 | Bright |
| 18 | 5.7 | Bright |
| 19 | 5.7 | Bright |
| 20 | 5.8 | Bright |
| 21 | 5.8 | Bright |
| 22 | 5.8 | Bright |
| 23 | 5.8 | Bright |
| 24 | 5.8 | Bright |
| 25 | 5.8 | Bright |
| 26 | 5.8 | Bright |
| 27 | 5.9 | Bright |
| 28 | 5.9 | Bright |
| 29 | 5.9 | Bright |
| 30 | 5.9 | Bright |
Hazard calendar for San Isidro
None of San Isidro's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
San Isidro's rainy season runs November–March, when most of the year's rain falls.
Is September a good time to visit San Isidro?
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 San Isidro for general sightseeing.
What to pack for San Isidro in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, San Isidro sees daytime highs around 21°C and nights near 8°C. Worth packing: a warm layer and sun protection. About 5 days see rain.
UV index in San Isidro in September
Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in San Isidro peaks around January 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 4 (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 | 14 | 12 | 7 | 5 | 4 | 4 | 6 | 8 | 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 | 14 | Extreme |
| Mar | 12 | Extreme |
| Apr | 7 | Very high |
| May | 5 | High |
| Jun | 4 | Moderate |
| Jul | 4 | Moderate |
| Aug | 6 | High |
| Sep | 8 | Very high |
| Oct | 12 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Where is San Isidro?
San Isidro sits at 28.5°S, 65.7°W, 518 m above sea level, in Argentina. The nearest listed city is Catamarca, 6.0 km away.
Topography around San Isidro
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Isidro.
Within 3 km, the terrain around San Isidro has only modest variations in elevation — a maximum elevation change of 134 m around an average of 522 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,541 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,232 m.
The land around San Isidro is covered by artificial surfaces (33%), trees (24%) and shrubs (21%) within 3 km, trees (40%) and shrubs (38%) within 16 km, and shrubs (44%) and trees (24%) 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 San Isidro (-28.4578°, -65.725°, elevation 518 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).