Rosário weather in January
In January, Rosário sees average daytime highs of 32°C and overnight lows near 24°C, with 262 mm of rain across 25.4 wet days and about 12.2 hours of daylight. It is the 6th-warmest and 4th-wettest month of the year here.
Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 4% of the time in January, and the air most often feels oppressive.
Daylight stretches from about 12 h 12 min at the start of January to 12 h 06 min by month's end. Set against the rest of the year, January is Rosário's 9th-clearest and 6th-windiest month. For the whole year in context, see Rosário's year-round climate.
- Daytime high
- 32°
- 6th warmest
- Overnight low
- 24°
- 8th coldest
- Rainfall
- 262 mm
- 25.4 wet days
- Daylight
- 12 h 12 min
- 6:02 AM – 6:11 PM
- Cloud cover
- 80%
- 9th clearest
- Wind
- 8 km/h
- 6th windiest
- Solar energy
- 4.89 kWh/m²
- Travel score
- 2.6
- out of 10
Temperature in January
Day-to-day highs hold fairly steady near 32°C through the month.
A typical January day in Rosário reaches about 32°C in the afternoon and slips back to 24°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 34°C. Set against its neighbours, January runs about 1°C cooler than December and on par with February.
| 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) | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 |
| Avg low (°C) | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 32 | 24 |
| 2 | 32 | 24 |
| 3 | 32 | 24 |
| 4 | 32 | 24 |
| 5 | 32 | 24 |
| 6 | 32 | 24 |
| 7 | 32 | 24 |
| 8 | 32 | 24 |
| 9 | 32 | 24 |
| 10 | 32 | 24 |
| 11 | 32 | 24 |
| 12 | 32 | 24 |
| 13 | 32 | 24 |
| 14 | 32 | 24 |
| 15 | 32 | 24 |
| 16 | 32 | 24 |
| 17 | 31 | 24 |
| 18 | 31 | 24 |
| 19 | 31 | 24 |
| 20 | 31 | 24 |
| 21 | 31 | 24 |
| 22 | 31 | 24 |
| 23 | 31 | 24 |
| 24 | 31 | 24 |
| 25 | 31 | 24 |
| 26 | 31 | 24 |
| 27 | 31 | 24 |
| 28 | 31 | 24 |
| 29 | 31 | 24 |
| 30 | 31 | 24 |
| 31 | 31 | 24 |
How January really feels in Rosário
Once humidity and wind are folded in, January averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Rosário weather by month
How January compares with the rest of the year at a glance. January is the 6th-warmest and 4th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 32° / 24° | 262 | 25.4 | 12.2 | 2.6 |
| Feb | 31° / 24° | 330 | 25.6 | 12.1 | 2.5 |
| Mar | 31° / 24° | 437 | 30 | 12 | 2.4 |
| Apr | 31° / 24° | 426 | 28.4 | 11.9 | 2.5 |
| May | 31° / 24° | 255 | 24.1 | 11.9 | 3.0 |
| Jun | 31° / 24° | 96 | 15.7 | 11.8 | 3.9 |
| Jul | 31° / 23° | 57 | 9.7 | 11.8 | 4.5 |
| Aug | 33° / 24° | 16 | 4.3 | 11.9 | 4.2 |
| Sep | 34° / 25° | 10 | 2.6 | 12 | 3.6 |
| Oct | 34° / 25° | 21 | 4.8 | 12.1 | 3.4 |
| Nov | 34° / 25° | 43 | 7.1 | 12.1 | 3.3 |
| Dec | 33° / 25° | 98 | 15.4 | 12.2 | 3.0 |
Cloud cover in January
The sky is clear or mostly clear about 4% of the time in January.
Beyond those clear spells, partly cloudy skies cover about 12% of January, with mostly cloudy or overcast conditions the remaining 84%.
| 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 (%) | 25 | 25 | 23 | 23 | 21 | 20 | 20 | 18 | 17 | 16 | 15 | 15 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 15 | 14 | 14 | 14 | 15 | 15 |
| Cloudier (%) | 75 | 75 | 77 | 77 | 79 | 80 | 80 | 82 | 83 | 84 | 85 | 85 | 86 | 87 | 87 | 87 | 87 | 87 | 87 | 87 | 86 | 86 | 86 | 86 | 86 | 85 | 86 | 86 | 86 | 85 | 85 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 25 | 75 |
| 2 | 25 | 75 |
| 3 | 23 | 77 |
| 4 | 23 | 77 |
| 5 | 21 | 79 |
| 6 | 20 | 80 |
| 7 | 20 | 80 |
| 8 | 18 | 82 |
| 9 | 17 | 83 |
| 10 | 16 | 84 |
| 11 | 15 | 85 |
| 12 | 15 | 85 |
| 13 | 14 | 86 |
| 14 | 13 | 87 |
| 15 | 13 | 87 |
| 16 | 13 | 87 |
| 17 | 13 | 87 |
| 18 | 13 | 87 |
| 19 | 13 | 87 |
| 20 | 13 | 87 |
| 21 | 14 | 86 |
| 22 | 14 | 86 |
| 23 | 14 | 86 |
| 24 | 14 | 86 |
| 25 | 14 | 86 |
| 26 | 15 | 85 |
| 27 | 14 | 86 |
| 28 | 14 | 86 |
| 29 | 14 | 86 |
| 30 | 15 | 85 |
| 31 | 15 | 85 |
Chance of precipitation in January
Rosário gets around 262 mm of rain over 25.4 wet days in January. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 82% and peaks near 88% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 83 | 84 | 84 | 85 | 85 | 86 | 86 | 86 | 87 | 87 | 87 | 87 | 88 | 88 | 88 | 88 | 88 |
| Rain chance (%) | |
|---|---|
| 1 | 70 |
| 2 | 71 |
| 3 | 72 |
| 4 | 73 |
| 5 | 74 |
| 6 | 75 |
| 7 | 76 |
| 8 | 77 |
| 9 | 78 |
| 10 | 79 |
| 11 | 80 |
| 12 | 81 |
| 13 | 82 |
| 14 | 83 |
| 15 | 83 |
| 16 | 84 |
| 17 | 84 |
| 18 | 85 |
| 19 | 85 |
| 20 | 86 |
| 21 | 86 |
| 22 | 86 |
| 23 | 87 |
| 24 | 87 |
| 25 | 87 |
| 26 | 87 |
| 27 | 88 |
| 28 | 88 |
| 29 | 88 |
| 30 | 88 |
| 31 | 88 |
Humidity in January
Most of January feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, January lands in the oppressive band about 80% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Muggy (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Oppressive (%) | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 84 | 84 | 85 | 84 | 84 | 84 | 83 | 83 | 82 | 80 | 79 | 78 | 79 | 78 | 77 | 76 | 76 | 75 | 75 | 74 | 74 | 73 | 73 | 72 |
| Miserable (%) | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 16 | 16 | 16 | 17 | 17 | 18 | 19 | 20 | 21 | 21 | 22 | 23 | 24 | 24 | 25 | 25 | 26 | 26 | 27 | 27 | 28 |
| Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|
| 1 | 1 | 85 | 14 |
| 2 | 1 | 85 | 14 |
| 3 | 1 | 85 | 14 |
| 4 | 1 | 85 | 14 |
| 5 | 1 | 85 | 14 |
| 6 | 1 | 85 | 14 |
| 7 | 1 | 85 | 14 |
| 8 | 1 | 84 | 15 |
| 9 | 1 | 84 | 15 |
| 10 | 0 | 85 | 15 |
| 11 | 0 | 84 | 16 |
| 12 | 0 | 84 | 16 |
| 13 | 0 | 84 | 16 |
| 14 | 0 | 83 | 17 |
| 15 | 0 | 83 | 17 |
| 16 | 0 | 82 | 18 |
| 17 | 1 | 80 | 19 |
| 18 | 1 | 79 | 20 |
| 19 | 1 | 78 | 21 |
| 20 | 0 | 79 | 21 |
| 21 | 0 | 78 | 22 |
| 22 | 0 | 77 | 23 |
| 23 | 0 | 76 | 24 |
| 24 | 0 | 76 | 24 |
| 25 | 0 | 75 | 25 |
| 26 | 0 | 75 | 25 |
| 27 | 0 | 74 | 26 |
| 28 | 0 | 74 | 26 |
| 29 | 0 | 73 | 27 |
| 30 | 0 | 73 | 27 |
| 31 | 0 | 72 | 28 |
Wind in January
Winds average 8 km/h in January.
Across January, daily wind ranges from about 8 km/h on the calmest days to 10 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) | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 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 | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 10 | calm |
| 2 | 9 | calm |
| 3 | 9 | calm |
| 4 | 9 | calm |
| 5 | 9 | calm |
| 6 | 9 | calm |
| 7 | 9 | calm |
| 8 | 9 | calm |
| 9 | 9 | calm |
| 10 | 9 | calm |
| 11 | 9 | calm |
| 12 | 9 | 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 |
| 31 | 8 | calm |
Sunrise & sunset in January
Daylight runs from about 12 h 12 min at the start of January to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 6 minutes over January. Sunrise moves from 5:55 AM to 6:06 AM, and sunset from 6:05 PM to 6:14 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) | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 |
| Sunrise (AM) | 5:55 | 5:56 | 5:56 | 5:57 | 5:57 | 5:57 | 5:58 | 5:58 | 5:59 | 5:59 | 6:00 | 6:00 | 6:00 | 6:01 | 6:01 | 6:02 | 6:02 | 6:02 | 6:03 | 6:03 | 6:04 | 6:04 | 6:04 | 6:05 | 6:05 | 6:05 | 6:05 | 6:06 | 6:06 | 6:06 | 6:06 |
| Sunset (PM) | 6:05 | 6:06 | 6:06 | 6:06 | 6:07 | 6:07 | 6:08 | 6:08 | 6:08 | 6:09 | 6:09 | 6:10 | 6:10 | 6:10 | 6:11 | 6:11 | 6:11 | 6:11 | 6:12 | 6:12 | 6:12 | 6:13 | 6:13 | 6:13 | 6:13 | 6:13 | 6:14 | 6:14 | 6:14 | 6:14 | 6:14 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.2 | 5:55 | 6:05 |
| 2 | 12.2 | 5:56 | 6:06 |
| 3 | 12.2 | 5:56 | 6:06 |
| 4 | 12.2 | 5:57 | 6:06 |
| 5 | 12.2 | 5:57 | 6:07 |
| 6 | 12.2 | 5:57 | 6:07 |
| 7 | 12.2 | 5:58 | 6:08 |
| 8 | 12.2 | 5:58 | 6:08 |
| 9 | 12.2 | 5:59 | 6:08 |
| 10 | 12.2 | 5:59 | 6:09 |
| 11 | 12.2 | 6:00 | 6:09 |
| 12 | 12.2 | 6:00 | 6:10 |
| 13 | 12.2 | 6:00 | 6:10 |
| 14 | 12.2 | 6:01 | 6:10 |
| 15 | 12.2 | 6:01 | 6:11 |
| 16 | 12.2 | 6:02 | 6:11 |
| 17 | 12.2 | 6:02 | 6:11 |
| 18 | 12.2 | 6:02 | 6:11 |
| 19 | 12.1 | 6:03 | 6:12 |
| 20 | 12.1 | 6:03 | 6:12 |
| 21 | 12.1 | 6:04 | 6:12 |
| 22 | 12.1 | 6:04 | 6:13 |
| 23 | 12.1 | 6:04 | 6:13 |
| 24 | 12.1 | 6:05 | 6:13 |
| 25 | 12.1 | 6:05 | 6:13 |
| 26 | 12.1 | 6:05 | 6:13 |
| 27 | 12.1 | 6:05 | 6:14 |
| 28 | 12.1 | 6:06 | 6:14 |
| 29 | 12.1 | 6:06 | 6:14 |
| 30 | 12.1 | 6:06 | 6:14 |
| 31 | 12.1 | 6:06 | 6:14 |
Solar energy in January
Average shortwave solar energy reaching the ground each day in January, about 4.89 kWh/m².
For context, solar energy here swings from a low near 4.38 kWh/m² to a high of 6.27 kWh/m² in October across the year — January's 4.89 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.1 | 5.1 | 5.1 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 |
| 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 | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.1 | Bright |
| 2 | 5.1 | Bright |
| 3 | 5.1 | Bright |
| 4 | 5.0 | Bright |
| 5 | 5.0 | Bright |
| 6 | 5.0 | Bright |
| 7 | 5.0 | Bright |
| 8 | 5.0 | Bright |
| 9 | 4.9 | Bright |
| 10 | 4.9 | Bright |
| 11 | 4.9 | Bright |
| 12 | 4.9 | Bright |
| 13 | 4.9 | Bright |
| 14 | 4.8 | Bright |
| 15 | 4.8 | Bright |
| 16 | 4.8 | Bright |
| 17 | 4.8 | Bright |
| 18 | 4.8 | Bright |
| 19 | 4.8 | Bright |
| 20 | 4.8 | Bright |
| 21 | 4.8 | Bright |
| 22 | 4.8 | Bright |
| 23 | 4.8 | Bright |
| 24 | 4.8 | Bright |
| 25 | 4.8 | Bright |
| 26 | 4.8 | Bright |
| 27 | 4.8 | Bright |
| 28 | 4.8 | Bright |
| 29 | 4.8 | Bright |
| 30 | 4.8 | Bright |
| 31 | 4.8 | Bright |
Hazard calendar for Rosário
In January, Rosário sits inside its monsoon season. The full year is below, with each hazard's peak months called out.
Rosário's monsoon runs January–May, when most of the year's rain falls.
Is January a good time to visit Rosário?
Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
January is a weaker month for outdoor sightseeing in Rosário.
What to pack for Rosário in January
From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In January, Rosário sees daytime highs around 32°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.
Sea temperature near Rosário in January
The nearest coast averages about 28°C in January — 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 May at about 29°C and coldest in October near 28°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Tropical |
| Feb | 28 | Tropical |
| Mar | 28 | Tropical |
| Apr | 29 | Tropical |
| May | 29 | Tropical |
| Jun | 29 | Tropical |
| Jul | 28 | Tropical |
| Aug | 28 | Tropical |
| Sep | 28 | Warm |
| Oct | 28 | Warm |
| Nov | 28 | Warm |
| Dec | 28 | Warm |
UV index in Rosário in January
Clear-sky midday UV in January 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 Rosário peaks around March 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 17 at about 10 (extreme).
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) | 13 | 14 | 16 | 14 | 11 | 10 | 10 | 10 | 12 | 12 | 11 | 11 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 14 | Extreme |
| Mar | 16 | Extreme |
| Apr | 14 | Extreme |
| May | 11 | Extreme |
| Jun | 10 | Extreme |
| Jul | 10 | Very high |
| Aug | 10 | Extreme |
| Sep | 12 | Extreme |
| Oct | 12 | Extreme |
| Nov | 11 | Extreme |
| Dec | 11 | Extreme |
Air quality in Rosário in January
Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.
Air quality in Rosário is worst in February — around 17 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (June, 9 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 15 | 17 | 17 | 14 | 10 | 9 | 11 | 10 | 10 | 12 | 14 | 14 |
| Level | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 15 | Moderate |
| Feb | 17 | Moderate |
| Mar | 17 | Moderate |
| Apr | 14 | Moderate |
| May | 10 | Good |
| Jun | 9 | Good |
| Jul | 11 | Good |
| Aug | 10 | Good |
| Sep | 10 | Good |
| Oct | 12 | Moderate |
| Nov | 14 | Moderate |
| Dec | 14 | Moderate |
Where is Rosário?
Rosário sits at 2.9°S, 44.2°W, 1 m above sea level, in Brazil. The nearest listed city is Bacabeira, 8.0 km away.
Topography around Rosário
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rosário.
Within 3 km, the terrain around Rosário has only modest variations in elevation — a maximum elevation change of 43 m around an average of 14 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 97 m; within 80 km, only modest variations in elevation — a maximum elevation change of 124 m.
The land around Rosário is covered by trees (57%) and grassland (25%) within 3 km, trees (58%) within 16 km, and trees (44%) within 80 km.
Brazil travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / N
- 127 / 220 V · 60 Hz
- Prices
- ≈ 46% of US
- price level, 2025
- GDP per capita
- $10,713
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 89%
- of population, 2024
- Homicide rate
- 19.3
- per 100k, 2023
- Road deaths
- 16
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 482
- 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 Rosário (-2.9405°, -44.249°, elevation 1 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).