Tres Arroyos weather in December
In December, Tres Arroyos sees average daytime highs of 27°C and overnight lows near 14°C, with 78 mm of rain across 8.8 wet days and about 14.6 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.
Highs climb over the month, from about 25°C in the first days to 28°C by the end. The sky is clear or mostly clear about 55% of the time in December, and the air most often feels dry.
Daylight stretches from about 14 h 30 min at the start of December to 14 h 36 min by month's end. Set against the rest of the year, December is Tres Arroyos's 2nd-clearest and 1st-windiest month. For the whole year in context, see Tres Arroyos's year-round climate.
- Daytime high
- 27°
- 3rd warmest
- Overnight low
- 14°
- 10th coldest
- Rainfall
- 78 mm
- 8.8 wet days
- Daylight
- 14 h 42 min
- 5:37 AM – 8:17 PM
- Cloud cover
- 41%
- 2nd clearest
- Wind
- 17 km/h
- 1st windiest
- Solar energy
- 7.77 kWh/m²
- Travel score
- 6.9
- out of 10
Tres Arroyos is city in Buenos Aires Province, Argentina.
- Density
- 3,139/km²
- people per km²
- Founded
- 1884
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Highs climb over the month, from about 25°C in the first days to 28°C by the end.
A typical December day in Tres Arroyos reaches about 27°C in the afternoon and slips back to 14°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 33°C. Set against its neighbours, December runs about 4°C warmer than November and about 2°C cooler than January.
| 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) | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 |
| Avg low (°C) | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 25 | 12 |
| 2 | 25 | 12 |
| 3 | 25 | 12 |
| 4 | 25 | 12 |
| 5 | 25 | 12 |
| 6 | 26 | 13 |
| 7 | 26 | 13 |
| 8 | 26 | 13 |
| 9 | 26 | 13 |
| 10 | 26 | 13 |
| 11 | 26 | 13 |
| 12 | 26 | 13 |
| 13 | 27 | 13 |
| 14 | 27 | 13 |
| 15 | 27 | 14 |
| 16 | 27 | 14 |
| 17 | 27 | 14 |
| 18 | 27 | 14 |
| 19 | 27 | 14 |
| 20 | 28 | 14 |
| 21 | 28 | 14 |
| 22 | 28 | 15 |
| 23 | 28 | 15 |
| 24 | 28 | 15 |
| 25 | 28 | 15 |
| 26 | 28 | 15 |
| 27 | 28 | 15 |
| 28 | 28 | 15 |
| 29 | 28 | 15 |
| 30 | 29 | 15 |
| 31 | 29 | 15 |
How December really feels in Tres Arroyos
Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Tres Arroyos weather by month
How December compares with the rest of the year at a glance. December is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 28° / 15° | 74 | 9.7 | 14.4 | 6.1 |
| Feb | 27° / 15° | 75 | 8.3 | 13.5 | 6.9 |
| Mar | 25° / 13° | 76 | 8.2 | 12.3 | 7.4 |
| Apr | 21° / 10° | 64 | 7.2 | 11 | 6.9 |
| May | 17° / 7° | 46 | 6.2 | 9.9 | 5.7 |
| Jun | 13° / 4° | 33 | 5.2 | 9.4 | 4.2 |
| Jul | 13° / 4° | 38 | 6.1 | 9.6 | 3.8 |
| Aug | 15° / 5° | 47 | 5.8 | 10.5 | 4.9 |
| Sep | 17° / 6° | 51 | 6.9 | 11.7 | 5.8 |
| Oct | 20° / 9° | 78 | 9.4 | 13 | 6.4 |
| Nov | 23° / 11° | 83 | 9.3 | 14.1 | 7.1 |
| Dec | 27° / 14° | 78 | 8.8 | 14.6 | 6.9 |
Cloud cover in December
The sky is clear or mostly clear about 55% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 30%.
| 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 (%) | 67 | 67 | 67 | 67 | 67 | 67 | 67 | 67 | 67 | 67 | 68 | 68 | 68 | 69 | 69 | 70 | 70 | 71 | 72 | 72 | 72 | 73 | 73 | 74 | 74 | 73 | 73 | 73 | 73 | 73 | 72 |
| Cloudier (%) | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 32 | 32 | 32 | 31 | 31 | 30 | 30 | 29 | 28 | 28 | 28 | 27 | 27 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 28 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 67 | 33 |
| 2 | 67 | 33 |
| 3 | 67 | 33 |
| 4 | 67 | 33 |
| 5 | 67 | 33 |
| 6 | 67 | 33 |
| 7 | 67 | 33 |
| 8 | 67 | 33 |
| 9 | 67 | 33 |
| 10 | 67 | 33 |
| 11 | 68 | 32 |
| 12 | 68 | 32 |
| 13 | 68 | 32 |
| 14 | 69 | 31 |
| 15 | 69 | 31 |
| 16 | 70 | 30 |
| 17 | 70 | 30 |
| 18 | 71 | 29 |
| 19 | 72 | 28 |
| 20 | 72 | 28 |
| 21 | 72 | 28 |
| 22 | 73 | 27 |
| 23 | 73 | 27 |
| 24 | 74 | 26 |
| 25 | 74 | 26 |
| 26 | 73 | 27 |
| 27 | 73 | 27 |
| 28 | 73 | 27 |
| 29 | 73 | 27 |
| 30 | 73 | 27 |
| 31 | 72 | 28 |
Chance of precipitation in December
Tres Arroyos gets around 78 mm of rain over 8.8 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 28% and peaks near 32% on the wettest days.
| 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 (%) | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 29 | 29 | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 32 |
| Rain chance (%) | |
|---|---|
| 1 | 27 |
| 2 | 27 |
| 3 | 27 |
| 4 | 27 |
| 5 | 27 |
| 6 | 27 |
| 7 | 27 |
| 8 | 27 |
| 9 | 27 |
| 10 | 27 |
| 11 | 26 |
| 12 | 26 |
| 13 | 26 |
| 14 | 26 |
| 15 | 26 |
| 16 | 27 |
| 17 | 27 |
| 18 | 27 |
| 19 | 28 |
| 20 | 28 |
| 21 | 28 |
| 22 | 29 |
| 23 | 29 |
| 24 | 30 |
| 25 | 30 |
| 26 | 30 |
| 27 | 31 |
| 28 | 31 |
| 29 | 31 |
| 30 | 31 |
| 31 | 32 |
Humidity in December
Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the dry band about 67% 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 (%) | 76 | 76 | 76 | 75 | 75 | 74 | 74 | 74 | 73 | 73 | 73 | 73 | 72 | 72 | 72 | 71 | 71 | 69 | 68 | 66 | 65 | 63 | 63 | 60 | 59 | 58 | 56 | 54 | 54 | 54 | 52 |
| Comfortable (%) | 16 | 16 | 16 | 17 | 17 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 22 | 22 | 23 | 23 | 24 | 24 | 25 | 25 | 26 | 26 | 26 | 27 |
| Humid (%) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 9 | 9 | 10 | 11 | 12 | 12 | 13 | 14 | 14 | 15 | 16 | 16 | 16 | 17 |
| Muggy (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 76 | 16 | 7 | 1 |
| 2 | 76 | 16 | 7 | 1 |
| 3 | 76 | 16 | 7 | 1 |
| 4 | 75 | 17 | 7 | 1 |
| 5 | 75 | 17 | 7 | 1 |
| 6 | 74 | 18 | 7 | 1 |
| 7 | 74 | 18 | 7 | 1 |
| 8 | 74 | 18 | 7 | 1 |
| 9 | 73 | 19 | 7 | 1 |
| 10 | 73 | 19 | 7 | 1 |
| 11 | 73 | 19 | 7 | 1 |
| 12 | 73 | 19 | 7 | 1 |
| 13 | 72 | 20 | 7 | 1 |
| 14 | 72 | 20 | 7 | 1 |
| 15 | 72 | 20 | 7 | 1 |
| 16 | 71 | 20 | 8 | 1 |
| 17 | 71 | 20 | 8 | 1 |
| 18 | 69 | 21 | 9 | 1 |
| 19 | 68 | 21 | 9 | 2 |
| 20 | 66 | 22 | 10 | 2 |
| 21 | 65 | 22 | 11 | 2 |
| 22 | 63 | 23 | 12 | 2 |
| 23 | 63 | 23 | 12 | 2 |
| 24 | 60 | 24 | 13 | 3 |
| 25 | 59 | 24 | 14 | 3 |
| 26 | 58 | 25 | 14 | 3 |
| 27 | 56 | 25 | 15 | 4 |
| 28 | 54 | 26 | 16 | 4 |
| 29 | 54 | 26 | 16 | 4 |
| 30 | 54 | 26 | 16 | 4 |
| 31 | 52 | 27 | 17 | 4 |
Wind in December
Winds average 17 km/h in December, the windiest month of the year.
Across December, daily wind ranges from about 16 km/h on the calmest days to 17 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) | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 |
| 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 | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 16 | light breeze |
| 2 | 16 | light breeze |
| 3 | 16 | light breeze |
| 4 | 16 | light breeze |
| 5 | 16 | light breeze |
| 6 | 16 | light breeze |
| 7 | 16 | light breeze |
| 8 | 17 | light breeze |
| 9 | 17 | light breeze |
| 10 | 17 | light breeze |
| 11 | 17 | light breeze |
| 12 | 17 | light breeze |
| 13 | 17 | light breeze |
| 14 | 17 | light breeze |
| 15 | 17 | light breeze |
| 16 | 17 | light breeze |
| 17 | 17 | light breeze |
| 18 | 17 | light breeze |
| 19 | 17 | light breeze |
| 20 | 17 | light breeze |
| 21 | 17 | light breeze |
| 22 | 17 | light breeze |
| 23 | 17 | light breeze |
| 24 | 17 | light breeze |
| 25 | 17 | light breeze |
| 26 | 17 | light breeze |
| 27 | 17 | light breeze |
| 28 | 17 | light breeze |
| 29 | 17 | light breeze |
| 30 | 17 | light breeze |
| 31 | 17 | light breeze |
Sunrise & sunset in December
Daylight runs from about 14 h 30 min at the start of December to 14 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 6 minutes over December. Sunrise moves from 5:37 AM to 5:45 AM, and sunset from 8:05 PM to 8:23 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) | 14.5 | 14.5 | 14.5 | 14.5 | 14.5 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.7 | 14.6 | 14.6 |
| Sunrise (AM) | 5:37 | 5:36 | 5:36 | 5:36 | 5:36 | 5:36 | 5:36 | 5:36 | 5:36 | 5:36 | 5:36 | 5:36 | 5:37 | 5:37 | 5:37 | 5:37 | 5:38 | 5:38 | 5:38 | 5:39 | 5:39 | 5:40 | 5:40 | 5:41 | 5:41 | 5:42 | 5:42 | 5:43 | 5:44 | 5:44 | 5:45 |
| Sunset (PM) | 8:05 | 8:06 | 8:07 | 8:08 | 8:09 | 8:10 | 8:10 | 8:11 | 8:12 | 8:13 | 8:14 | 8:14 | 8:15 | 8:16 | 8:16 | 8:17 | 8:18 | 8:18 | 8:19 | 8:19 | 8:20 | 8:20 | 8:21 | 8:21 | 8:22 | 8:22 | 8:22 | 8:23 | 8:23 | 8:23 | 8:23 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.5 | 5:37 | 8:05 |
| 2 | 14.5 | 5:36 | 8:06 |
| 3 | 14.5 | 5:36 | 8:07 |
| 4 | 14.5 | 5:36 | 8:08 |
| 5 | 14.5 | 5:36 | 8:09 |
| 6 | 14.6 | 5:36 | 8:10 |
| 7 | 14.6 | 5:36 | 8:10 |
| 8 | 14.6 | 5:36 | 8:11 |
| 9 | 14.6 | 5:36 | 8:12 |
| 10 | 14.6 | 5:36 | 8:13 |
| 11 | 14.6 | 5:36 | 8:14 |
| 12 | 14.6 | 5:36 | 8:14 |
| 13 | 14.6 | 5:37 | 8:15 |
| 14 | 14.6 | 5:37 | 8:16 |
| 15 | 14.7 | 5:37 | 8:16 |
| 16 | 14.7 | 5:37 | 8:17 |
| 17 | 14.7 | 5:38 | 8:18 |
| 18 | 14.7 | 5:38 | 8:18 |
| 19 | 14.7 | 5:38 | 8:19 |
| 20 | 14.7 | 5:39 | 8:19 |
| 21 | 14.7 | 5:39 | 8:20 |
| 22 | 14.7 | 5:40 | 8:20 |
| 23 | 14.7 | 5:40 | 8:21 |
| 24 | 14.7 | 5:41 | 8:21 |
| 25 | 14.7 | 5:41 | 8:22 |
| 26 | 14.7 | 5:42 | 8:22 |
| 27 | 14.7 | 5:42 | 8:22 |
| 28 | 14.7 | 5:43 | 8:23 |
| 29 | 14.7 | 5:44 | 8:23 |
| 30 | 14.6 | 5:44 | 8:23 |
| 31 | 14.6 | 5:45 | 8:23 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 7.77 kWh/m² — the sunniest month for solar.
For context, solar energy here swings from a low near 1.95 kWh/m² to a high of 7.77 kWh/m² in December across the year — December's 7.77 kWh/m² sits near the top of that range.
| 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) | 7.5 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.7 | 7.7 | 7.7 | 7.7 | 7.7 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | 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 | 7.5 | Intense |
| 2 | 7.6 | Intense |
| 3 | 7.6 | Intense |
| 4 | 7.6 | Intense |
| 5 | 7.6 | Intense |
| 6 | 7.6 | Intense |
| 7 | 7.7 | Intense |
| 8 | 7.7 | Intense |
| 9 | 7.7 | Intense |
| 10 | 7.7 | Intense |
| 11 | 7.7 | Intense |
| 12 | 7.8 | Intense |
| 13 | 7.8 | Intense |
| 14 | 7.8 | Intense |
| 15 | 7.8 | Intense |
| 16 | 7.8 | Intense |
| 17 | 7.8 | Intense |
| 18 | 7.8 | Intense |
| 19 | 7.8 | Intense |
| 20 | 7.8 | Intense |
| 21 | 7.8 | Intense |
| 22 | 7.8 | Intense |
| 23 | 7.8 | Intense |
| 24 | 7.8 | Intense |
| 25 | 7.8 | Intense |
| 26 | 7.8 | Intense |
| 27 | 7.8 | Intense |
| 28 | 7.8 | Intense |
| 29 | 7.8 | Intense |
| 30 | 7.8 | Intense |
| 31 | 7.8 | Intense |
Is December a good time to visit Tres Arroyos?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a reasonable time to visit Tres Arroyos for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Tres Arroyos in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Tres Arroyos sees daytime highs around 27°C and nights near 14°C. Pack sun protection. Worth having: light clothes and rain gear. About 9 days see rain.
Sea temperature near Tres Arroyos in December
The nearest coast averages about 18°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 56 km away) is warmest in February at about 21°C and coldest in August near 10°C.
It's comfortable for a long swim from Jan 8 to Mar 21 — about 2.4 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 21 | 21 | 20 | 18 | 15 | 12 | 10 | 10 | 11 | 13 | 16 | 18 |
| Comfort | Refreshing | Refreshing | Refreshing | Cool | Cool | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 21 | Refreshing |
| Feb | 21 | Refreshing |
| Mar | 20 | Refreshing |
| Apr | 18 | Cool |
| May | 15 | Cool |
| Jun | 12 | Bracing |
| Jul | 10 | Bracing |
| Aug | 10 | Bracing |
| Sep | 11 | Bracing |
| Oct | 13 | Bracing |
| Nov | 16 | Cool |
| Dec | 18 | Cool |
UV index in Tres Arroyos in December
Clear-sky midday UV in December peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Tres Arroyos peaks around December 20 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 12 | 12 | 8 | 6 | 3 | 2 | 2 | 3 | 5 | 7 | 10 | 13 |
| Level | Extreme | Extreme | Very high | High | Moderate | Low | Moderate | Moderate | Moderate | Very high | Very high | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 12 | Extreme |
| Feb | 12 | Extreme |
| Mar | 8 | Very high |
| Apr | 6 | High |
| May | 3 | Moderate |
| Jun | 2 | Low |
| Jul | 2 | Moderate |
| Aug | 3 | Moderate |
| Sep | 5 | Moderate |
| Oct | 7 | Very high |
| Nov | 10 | Very high |
| Dec | 13 | Extreme |
Where is Tres Arroyos?
Tres Arroyos sits at 38.4°S, 60.3°W, 100 m above sea level, in Argentina. The nearest listed city is Benito Juárez, 89 km away.
Topography around Tres Arroyos
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Tres Arroyos.
Within 3 km, the terrain around Tres Arroyos has only modest variations in elevation — a maximum elevation change of 21 m around an average of 109 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 93 m; within 80 km, significant variations in elevation — a maximum elevation change of 268 m.
The land around Tres Arroyos is covered by artificial surfaces (43%) and grassland (41%) within 3 km, cropland (81%) within 16 km, and cropland (61%) and grassland (28%) 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 Tres Arroyos (-38.3769°, -60.2756°, elevation 100 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).