Belén weather in September
In September, Belén sees average daytime highs of 22°C and overnight lows near 10°C, with 30 mm of precipitation across 4.4 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 8th-wettest month of the year here.
Highs climb over the month, from about 21°C in the first days to 23°C by the end. The sky is clear or mostly clear about 76% 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 Belén's 3rd-clearest and 4th-windiest month. For the whole year in context, see Belén's year-round climate.
- Daytime high
- 22°
- 8th warmest
- Overnight low
- 10°
- 5th coldest
- Precipitation
- 30 mm
- 4.4 wet days
- Daylight
- 11 h 48 min
- 7:27 AM – 7:18 PM
- Cloud cover
- 25%
- 3rd clearest
- Wind
- 6 km/h
- 4th windiest
- Solar energy
- 6 kWh/m²
- Travel score
- 8.2
- out of 10
Belén is city in Catamarca province, Argentina.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Highs climb over the month, from about 21°C in the first days to 23°C by the end.
A typical September day in Belén reaches about 22°C in the afternoon and slips back to 10°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 29°C. Set against its neighbours, September runs about 2°C warmer than August and about 3°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) | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
| Avg low (°C) | 8 | 9 | 9 | 9 | 9 | 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 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 21 | 8 |
| 2 | 21 | 9 |
| 3 | 21 | 9 |
| 4 | 21 | 9 |
| 5 | 21 | 9 |
| 6 | 21 | 9 |
| 7 | 21 | 9 |
| 8 | 21 | 9 |
| 9 | 21 | 9 |
| 10 | 21 | 9 |
| 11 | 22 | 9 |
| 12 | 22 | 9 |
| 13 | 22 | 9 |
| 14 | 22 | 9 |
| 15 | 22 | 10 |
| 16 | 22 | 10 |
| 17 | 22 | 10 |
| 18 | 22 | 10 |
| 19 | 22 | 10 |
| 20 | 22 | 10 |
| 21 | 22 | 10 |
| 22 | 22 | 10 |
| 23 | 23 | 10 |
| 24 | 23 | 11 |
| 25 | 23 | 11 |
| 26 | 23 | 11 |
| 27 | 23 | 11 |
| 28 | 23 | 11 |
| 29 | 23 | 11 |
| 30 | 23 | 11 |
Belén weather by month
How September compares with the rest of the year at a glance. September is the 8th-warmest and 8th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 28° / 18° | 96 | 12.8 | 0 | 13.6 | 5.5 |
| Feb | 27° / 17° | 80 | 10.1 | 0 | 13 | 6.4 |
| Mar | 26° / 16° | 75 | 10.4 | 0 | 12.2 | 6.9 |
| Apr | 23° / 13° | 48 | 7.5 | 0 | 11.4 | 7.6 |
| May | 20° / 9° | 29 | 5 | 0 | 10.7 | 7.5 |
| Jun | 18° / 6° | 14 | 2.5 | 0.2 | 10.3 | 7.5 |
| Jul | 18° / 5° | 14 | 2.5 | 0.6 | 10.4 | 7.4 |
| Aug | 20° / 7° | 16 | 2.8 | 0.3 | 11 | 8.1 |
| Sep | 22° / 10° | 30 | 4.4 | 0.3 | 11.8 | 8.2 |
| Oct | 25° / 13° | 41 | 5.9 | 0 | 12.7 | 8.0 |
| Nov | 27° / 15° | 54 | 7.3 | 0 | 13.4 | 7.2 |
| Dec | 29° / 17° | 71 | 9.2 | 0 | 13.7 | 6.1 |
Cloud cover in September
The sky is clear or mostly clear about 76% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 8% of September, with mostly cloudy or overcast conditions the remaining 17%.
| 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 (%) | 84 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 84 | 84 | 84 | 84 | 85 | 85 | 85 | 84 | 84 | 84 | 83 | 83 | 83 | 83 | 82 | 82 | 82 | 82 | 82 | 82 |
| Cloudier (%) | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 84 | 16 |
| 2 | 83 | 17 |
| 3 | 83 | 17 |
| 4 | 83 | 17 |
| 5 | 83 | 17 |
| 6 | 83 | 17 |
| 7 | 83 | 17 |
| 8 | 83 | 17 |
| 9 | 83 | 17 |
| 10 | 83 | 17 |
| 11 | 84 | 16 |
| 12 | 84 | 16 |
| 13 | 84 | 16 |
| 14 | 84 | 16 |
| 15 | 85 | 15 |
| 16 | 85 | 15 |
| 17 | 85 | 15 |
| 18 | 84 | 16 |
| 19 | 84 | 16 |
| 20 | 84 | 16 |
| 21 | 83 | 17 |
| 22 | 83 | 17 |
| 23 | 83 | 17 |
| 24 | 83 | 17 |
| 25 | 82 | 18 |
| 26 | 82 | 18 |
| 27 | 82 | 18 |
| 28 | 82 | 18 |
| 29 | 82 | 18 |
| 30 | 82 | 18 |
Chance of precipitation in September
Belén gets around 30 mm of rain and snow 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 precipitation averages around 14% and peaks near 15% on the wettest days, and about 0 day brings snow.
| 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 (%) | 11 | 12 | 12 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| Snow chance (%) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 11 | 2 |
| 2 | 12 | 2 |
| 3 | 12 | 2 |
| 4 | 13 | 2 |
| 5 | 13 | 2 |
| 6 | 14 | 2 |
| 7 | 14 | 2 |
| 8 | 14 | 2 |
| 9 | 14 | 2 |
| 10 | 14 | 1 |
| 11 | 14 | 1 |
| 12 | 14 | 1 |
| 13 | 14 | 1 |
| 14 | 14 | 1 |
| 15 | 14 | 1 |
| 16 | 14 | 0 |
| 17 | 14 | 0 |
| 18 | 14 | 0 |
| 19 | 14 | 0 |
| 20 | 14 | 0 |
| 21 | 14 | 0 |
| 22 | 14 | 0 |
| 23 | 15 | 0 |
| 24 | 15 | 0 |
| 25 | 15 | 0 |
| 26 | 15 | 0 |
| 27 | 15 | 0 |
| 28 | 15 | 0 |
| 29 | 15 | 0 |
| 30 | 15 | 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 100% 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 (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Dry (%) | |
|---|---|
| 1 | 100 |
| 2 | 100 |
| 3 | 100 |
| 4 | 100 |
| 5 | 100 |
| 6 | 100 |
| 7 | 100 |
| 8 | 100 |
| 9 | 100 |
| 10 | 100 |
| 11 | 100 |
| 12 | 100 |
| 13 | 100 |
| 14 | 100 |
| 15 | 100 |
| 16 | 100 |
| 17 | 100 |
| 18 | 100 |
| 19 | 100 |
| 20 | 100 |
| 21 | 100 |
| 22 | 100 |
| 23 | 100 |
| 24 | 100 |
| 25 | 100 |
| 26 | 100 |
| 27 | 100 |
| 28 | 100 |
| 29 | 100 |
| 30 | 100 |
Wind in September
Winds average 6 km/h in September.
Across September, daily wind ranges from about 5 km/h on the calmest days to 6 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) | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| 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 | 5 | calm |
| 2 | 5 | calm |
| 3 | 5 | calm |
| 4 | 6 | calm |
| 5 | 6 | calm |
| 6 | 6 | calm |
| 7 | 6 | calm |
| 8 | 6 | calm |
| 9 | 6 | calm |
| 10 | 6 | calm |
| 11 | 6 | calm |
| 12 | 6 | calm |
| 13 | 6 | calm |
| 14 | 6 | calm |
| 15 | 6 | calm |
| 16 | 6 | calm |
| 17 | 6 | calm |
| 18 | 6 | calm |
| 19 | 6 | calm |
| 20 | 6 | calm |
| 21 | 6 | calm |
| 22 | 6 | calm |
| 23 | 6 | calm |
| 24 | 6 | calm |
| 25 | 6 | calm |
| 26 | 6 | calm |
| 27 | 6 | calm |
| 28 | 6 | calm |
| 29 | 6 | calm |
| 30 | 6 | 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 7:45 AM to 7:10 AM, and sunset from 7:11 PM to 7:24 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 | 11.5 | 11.5 | 11.5 | 11.5 | 11.6 | 11.6 | 11.6 | 11.6 | 11.7 | 11.7 | 11.7 | 11.8 | 11.8 | 11.8 | 11.8 | 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) | 7:45 | 7:44 | 7:43 | 7:42 | 7:40 | 7:39 | 7:38 | 7:37 | 7:36 | 7:35 | 7:33 | 7:32 | 7:31 | 7:30 | 7:29 | 7:27 | 7:26 | 7:25 | 7:24 | 7:22 | 7:21 | 7:20 | 7:19 | 7:18 | 7:16 | 7:15 | 7:14 | 7:13 | 7:12 | 7:10 |
| Sunset (PM) | 7:11 | 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 | 7:19 | 7:20 | 7:20 | 7:21 | 7:21 | 7:22 | 7:22 | 7:23 | 7:23 | 7:24 | 7:24 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.4 | 7:45 | 7:11 |
| 2 | 11.5 | 7:44 | 7:11 |
| 3 | 11.5 | 7:43 | 7:11 |
| 4 | 11.5 | 7:42 | 7:12 |
| 5 | 11.5 | 7:40 | 7:12 |
| 6 | 11.6 | 7:39 | 7:13 |
| 7 | 11.6 | 7:38 | 7:13 |
| 8 | 11.6 | 7:37 | 7:14 |
| 9 | 11.6 | 7:36 | 7:14 |
| 10 | 11.7 | 7:35 | 7:15 |
| 11 | 11.7 | 7:33 | 7:15 |
| 12 | 11.7 | 7:32 | 7:16 |
| 13 | 11.8 | 7:31 | 7:16 |
| 14 | 11.8 | 7:30 | 7:17 |
| 15 | 11.8 | 7:29 | 7:17 |
| 16 | 11.8 | 7:27 | 7:18 |
| 17 | 11.9 | 7:26 | 7:18 |
| 18 | 11.9 | 7:25 | 7:19 |
| 19 | 11.9 | 7:24 | 7:19 |
| 20 | 12.0 | 7:22 | 7:19 |
| 21 | 12.0 | 7:21 | 7:20 |
| 22 | 12.0 | 7:20 | 7:20 |
| 23 | 12.0 | 7:19 | 7:21 |
| 24 | 12.1 | 7:18 | 7:21 |
| 25 | 12.1 | 7:16 | 7:22 |
| 26 | 12.1 | 7:15 | 7:22 |
| 27 | 12.1 | 7:14 | 7:23 |
| 28 | 12.2 | 7:13 | 7:23 |
| 29 | 12.2 | 7:12 | 7:24 |
| 30 | 12.2 | 7:10 | 7:24 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 6 kWh/m².
For context, solar energy here swings from a low near 3.78 kWh/m² to a high of 7.54 kWh/m² in December across the year — September's 6 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) | 5.5 | 5.6 | 5.6 | 5.6 | 5.7 | 5.7 | 5.7 | 5.8 | 5.8 | 5.8 | 5.9 | 5.9 | 5.9 | 6.0 | 6.0 | 6.0 | 6.1 | 6.1 | 6.2 | 6.2 | 6.2 | 6.3 | 6.3 | 6.3 | 6.3 | 6.4 | 6.4 | 6.5 | 6.5 | 6.5 |
| Level | Bright | Bright | Bright | Bright | Bright | 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 |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.5 | Bright |
| 2 | 5.6 | Bright |
| 3 | 5.6 | Bright |
| 4 | 5.6 | Bright |
| 5 | 5.7 | Bright |
| 6 | 5.7 | Bright |
| 7 | 5.7 | Bright |
| 8 | 5.8 | Bright |
| 9 | 5.8 | Bright |
| 10 | 5.8 | Bright |
| 11 | 5.9 | Bright |
| 12 | 5.9 | Bright |
| 13 | 5.9 | Bright |
| 14 | 6.0 | Bright |
| 15 | 6.0 | Intense |
| 16 | 6.0 | Intense |
| 17 | 6.1 | Intense |
| 18 | 6.1 | Intense |
| 19 | 6.2 | Intense |
| 20 | 6.2 | Intense |
| 21 | 6.2 | Intense |
| 22 | 6.3 | Intense |
| 23 | 6.3 | Intense |
| 24 | 6.3 | Intense |
| 25 | 6.3 | Intense |
| 26 | 6.4 | Intense |
| 27 | 6.4 | Intense |
| 28 | 6.5 | Intense |
| 29 | 6.5 | Intense |
| 30 | 6.5 | Intense |
Hazard calendar for Belén
None of Belén's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Belén's rainy season runs November–April, when most of the year's rain falls.
Is September a good time to visit Belén?
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 Belén for general sightseeing.
What to pack for Belén in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Belén sees daytime highs around 22°C and nights near 10°C. Pack sun protection. About 4 days see rain.
UV index in Belén in September
Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Belén peaks around January 18 at about 16 (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) | 16 | 16 | 13 | 8 | 6 | 5 | 5 | 7 | 10 | 13 | 14 | 16 |
| Level | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate | Very high | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 16 | Extreme |
| Feb | 16 | Extreme |
| Mar | 13 | Extreme |
| Apr | 8 | Very high |
| May | 6 | High |
| Jun | 5 | Moderate |
| Jul | 5 | Moderate |
| Aug | 7 | Very high |
| Sep | 10 | Very high |
| Oct | 13 | Extreme |
| Nov | 14 | Extreme |
| Dec | 16 | Extreme |
Where is Belén?
Belén sits at 27.6°S, 67.0°W, 1,223 m above sea level, in Argentina. The nearest listed city is Aimogasta, 103 km away.
Topography around Belén
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Belén.
Within 3 km, the terrain around Belén has large variations in elevation — a maximum elevation change of 639 m around an average of 1,356 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,489 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,148 m.
The land around Belén is covered by shrubs (60%) within 3 km, shrubs (83%) within 16 km, and bare terrain (40%), shrubs (32%) and grassland (27%) 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 Belén (-27.6495°, -67.0263°, elevation 1,223 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).