Rio Negro weather in January
In January, Rio Negro sees average daytime highs of 27°C and overnight lows near 18°C, with 183 mm of rain across 19.9 wet days and about 13.5 hours of daylight. It is the 1st-warmest and 1st-wettest month of the year here.
Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 10% of the time in January, and the air most often feels muggy.
Daylight stretches from about 13 h 36 min at the start of January to 13 h 12 min by month's end. Set against the rest of the year, January is Rio Negro's 11th-clearest and 7th-windiest month. For the whole year in context, see Rio Negro's year-round climate.
- Daytime high
- 27°
- 1st warmest
- Overnight low
- 18°
- 12th coldest
- Rainfall
- 183 mm
- 19.9 wet days
- Daylight
- 13 h 30 min
- 6:44 AM – 8:13 PM
- Cloud cover
- 75%
- 11th clearest
- Wind
- 10 km/h
- 7th windiest
- Solar energy
- 5.42 kWh/m²
- Travel score
- 4.9
- out of 10
Rio Negro is settlement in Brazil.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in January
Day-to-day highs hold fairly steady near 27°C through the month.
A typical January day in Rio Negro reaches about 27°C in the afternoon and slips back to 18°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 30°C. Set against its neighbours, January runs on par with 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) | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
| Avg low (°C) | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 27 | 18 |
| 2 | 27 | 18 |
| 3 | 27 | 18 |
| 4 | 27 | 18 |
| 5 | 27 | 18 |
| 6 | 27 | 18 |
| 7 | 27 | 18 |
| 8 | 27 | 18 |
| 9 | 27 | 18 |
| 10 | 27 | 18 |
| 11 | 27 | 18 |
| 12 | 27 | 18 |
| 13 | 27 | 18 |
| 14 | 27 | 18 |
| 15 | 27 | 18 |
| 16 | 27 | 18 |
| 17 | 27 | 18 |
| 18 | 27 | 18 |
| 19 | 27 | 18 |
| 20 | 27 | 18 |
| 21 | 27 | 18 |
| 22 | 27 | 18 |
| 23 | 27 | 18 |
| 24 | 27 | 18 |
| 25 | 27 | 18 |
| 26 | 27 | 18 |
| 27 | 27 | 18 |
| 28 | 27 | 18 |
| 29 | 27 | 18 |
| 30 | 27 | 18 |
| 31 | 27 | 18 |
Rio Negro weather by month
How January compares with the rest of the year at a glance. January is the 1st-warmest and 1st-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 27° / 18° | 183 | 19.9 | 13.5 | 4.9 |
| Feb | 27° / 18° | 157 | 17.8 | 12.9 | 5.0 |
| Mar | 26° / 17° | 106 | 14.2 | 12.2 | 5.9 |
| Apr | 24° / 15° | 71 | 8.8 | 11.4 | 6.9 |
| May | 21° / 12° | 94 | 8 | 10.7 | 6.6 |
| Jun | 19° / 10° | 106 | 9.2 | 10.4 | 6.3 |
| Jul | 19° / 9° | 86 | 8 | 10.5 | 6.5 |
| Aug | 21° / 10° | 84 | 7.8 | 11.1 | 7.0 |
| Sep | 22° / 12° | 145 | 10.8 | 11.8 | 6.4 |
| Oct | 23° / 14° | 144 | 14.2 | 12.6 | 6.0 |
| Nov | 25° / 15° | 123 | 13.9 | 13.3 | 6.0 |
| Dec | 26° / 17° | 149 | 17 | 13.6 | 5.4 |
Cloud cover in January
The sky is clear or mostly clear about 10% of the time in January.
Beyond those clear spells, partly cloudy skies cover about 17% of January, with mostly cloudy or overcast conditions the remaining 73%.
| 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 (%) | 28 | 28 | 27 | 27 | 28 | 28 | 27 | 27 | 27 | 28 | 27 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 28 | 28 | 29 | 29 |
| Cloudier (%) | 72 | 72 | 73 | 73 | 72 | 72 | 73 | 73 | 73 | 72 | 73 | 72 | 72 | 72 | 73 | 73 | 73 | 73 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 73 | 73 | 72 | 72 | 71 | 71 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 28 | 72 |
| 2 | 28 | 72 |
| 3 | 27 | 73 |
| 4 | 27 | 73 |
| 5 | 28 | 72 |
| 6 | 28 | 72 |
| 7 | 27 | 73 |
| 8 | 27 | 73 |
| 9 | 27 | 73 |
| 10 | 28 | 72 |
| 11 | 27 | 73 |
| 12 | 28 | 72 |
| 13 | 28 | 72 |
| 14 | 28 | 72 |
| 15 | 27 | 73 |
| 16 | 27 | 73 |
| 17 | 27 | 73 |
| 18 | 27 | 73 |
| 19 | 26 | 74 |
| 20 | 26 | 74 |
| 21 | 26 | 74 |
| 22 | 26 | 74 |
| 23 | 26 | 74 |
| 24 | 26 | 74 |
| 25 | 26 | 74 |
| 26 | 27 | 73 |
| 27 | 27 | 73 |
| 28 | 28 | 72 |
| 29 | 28 | 72 |
| 30 | 29 | 71 |
| 31 | 29 | 71 |
Chance of precipitation in January
Rio Negro gets around 183 mm of rain over 19.9 wet days in January, the wettest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 64% and peaks near 64% 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 (%) | 62 | 62 | 63 | 63 | 63 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 63 | 63 | 63 | 63 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 63 | 63 | 63 |
| Rain chance (%) | |
|---|---|
| 1 | 62 |
| 2 | 62 |
| 3 | 63 |
| 4 | 63 |
| 5 | 63 |
| 6 | 64 |
| 7 | 64 |
| 8 | 64 |
| 9 | 64 |
| 10 | 64 |
| 11 | 64 |
| 12 | 64 |
| 13 | 64 |
| 14 | 64 |
| 15 | 64 |
| 16 | 64 |
| 17 | 63 |
| 18 | 63 |
| 19 | 63 |
| 20 | 63 |
| 21 | 64 |
| 22 | 64 |
| 23 | 64 |
| 24 | 64 |
| 25 | 64 |
| 26 | 64 |
| 27 | 64 |
| 28 | 64 |
| 29 | 63 |
| 30 | 63 |
| 31 | 63 |
Humidity in January
Most of January feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, January lands in the muggy band about 52% of days. Sticky, muggy-or-worse air turns up on roughly 53% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Comfortable (%) | 16 | 15 | 15 | 14 | 13 | 13 | 12 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 10 |
| Humid (%) | 32 | 32 | 33 | 33 | 34 | 35 | 36 | 36 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 36 | 36 | 35 | 34 | 34 | 33 | 33 | 32 | 32 | 31 | 31 | 31 | 31 | 30 |
| Muggy (%) | 51 | 52 | 51 | 52 | 52 | 51 | 51 | 52 | 51 | 52 | 52 | 52 | 52 | 52 | 51 | 51 | 51 | 52 | 51 | 52 | 52 | 52 | 53 | 53 | 54 | 55 | 56 | 56 | 57 | 57 | 58 |
| Oppressive (%) | 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 | 1 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 1 | 16 | 32 | 51 | 0 |
| 2 | 1 | 15 | 32 | 52 | 0 |
| 3 | 1 | 15 | 33 | 51 | 0 |
| 4 | 1 | 14 | 33 | 52 | 0 |
| 5 | 1 | 13 | 34 | 52 | 0 |
| 6 | 1 | 13 | 35 | 51 | 0 |
| 7 | 1 | 12 | 36 | 51 | 0 |
| 8 | 1 | 11 | 36 | 52 | 0 |
| 9 | 1 | 11 | 37 | 51 | 0 |
| 10 | 1 | 10 | 37 | 52 | 0 |
| 11 | 1 | 10 | 37 | 52 | 0 |
| 12 | 1 | 10 | 37 | 52 | 0 |
| 13 | 1 | 10 | 37 | 52 | 0 |
| 14 | 1 | 10 | 37 | 52 | 0 |
| 15 | 1 | 11 | 37 | 51 | 0 |
| 16 | 1 | 11 | 37 | 51 | 0 |
| 17 | 1 | 11 | 37 | 51 | 0 |
| 18 | 1 | 11 | 36 | 52 | 0 |
| 19 | 1 | 12 | 36 | 51 | 0 |
| 20 | 1 | 12 | 35 | 52 | 0 |
| 21 | 1 | 12 | 34 | 52 | 1 |
| 22 | 1 | 12 | 34 | 52 | 1 |
| 23 | 1 | 12 | 33 | 53 | 1 |
| 24 | 1 | 12 | 33 | 53 | 1 |
| 25 | 1 | 12 | 32 | 54 | 1 |
| 26 | 1 | 11 | 32 | 55 | 1 |
| 27 | 1 | 11 | 31 | 56 | 1 |
| 28 | 1 | 11 | 31 | 56 | 1 |
| 29 | 1 | 10 | 31 | 57 | 1 |
| 30 | 1 | 10 | 31 | 57 | 1 |
| 31 | 1 | 10 | 30 | 58 | 1 |
Wind in January
Winds average 10 km/h in January.
Across January, daily wind ranges from about 10 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 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| 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 | 10 | calm |
| 3 | 10 | calm |
| 4 | 10 | calm |
| 5 | 10 | calm |
| 6 | 10 | calm |
| 7 | 10 | calm |
| 8 | 10 | calm |
| 9 | 10 | calm |
| 10 | 10 | calm |
| 11 | 10 | calm |
| 12 | 10 | calm |
| 13 | 10 | calm |
| 14 | 10 | calm |
| 15 | 10 | calm |
| 16 | 10 | calm |
| 17 | 10 | calm |
| 18 | 10 | calm |
| 19 | 10 | calm |
| 20 | 10 | calm |
| 21 | 10 | calm |
| 22 | 10 | calm |
| 23 | 10 | calm |
| 24 | 10 | calm |
| 25 | 10 | calm |
| 26 | 10 | calm |
| 27 | 10 | calm |
| 28 | 10 | calm |
| 29 | 10 | calm |
| 30 | 10 | calm |
| 31 | 10 | calm |
Sunrise & sunset in January
Daylight runs from about 13 h 36 min at the start of January to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 24 minutes over January. Sunrise moves from 6:34 AM to 6:56 AM, and sunset from 8:11 PM to 8:09 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) | 13.6 | 13.6 | 13.6 | 13.6 | 13.6 | 13.6 | 13.6 | 13.6 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.4 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.2 | 13.2 |
| Sunrise (AM) | 6:34 | 6:35 | 6:35 | 6:36 | 6:37 | 6:37 | 6:38 | 6:39 | 6:39 | 6:40 | 6:41 | 6:42 | 6:42 | 6:43 | 6:44 | 6:44 | 6:45 | 6:46 | 6:47 | 6:47 | 6:48 | 6:49 | 6:50 | 6:50 | 6:51 | 6:52 | 6:53 | 6:53 | 6:54 | 6:55 | 6:56 |
| Sunset (PM) | 8:11 | 8:11 | 8:11 | 8:11 | 8:12 | 8:12 | 8:12 | 8:12 | 8:12 | 8:12 | 8:12 | 8:13 | 8:13 | 8:13 | 8:13 | 8:13 | 8:12 | 8:12 | 8:12 | 8:12 | 8:12 | 8:12 | 8:12 | 8:12 | 8:11 | 8:11 | 8:11 | 8:10 | 8:10 | 8:10 | 8:09 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.6 | 6:34 | 8:11 |
| 2 | 13.6 | 6:35 | 8:11 |
| 3 | 13.6 | 6:35 | 8:11 |
| 4 | 13.6 | 6:36 | 8:11 |
| 5 | 13.6 | 6:37 | 8:12 |
| 6 | 13.6 | 6:37 | 8:12 |
| 7 | 13.6 | 6:38 | 8:12 |
| 8 | 13.6 | 6:39 | 8:12 |
| 9 | 13.5 | 6:39 | 8:12 |
| 10 | 13.5 | 6:40 | 8:12 |
| 11 | 13.5 | 6:41 | 8:12 |
| 12 | 13.5 | 6:42 | 8:13 |
| 13 | 13.5 | 6:42 | 8:13 |
| 14 | 13.5 | 6:43 | 8:13 |
| 15 | 13.5 | 6:44 | 8:13 |
| 16 | 13.5 | 6:44 | 8:13 |
| 17 | 13.5 | 6:45 | 8:12 |
| 18 | 13.4 | 6:46 | 8:12 |
| 19 | 13.4 | 6:47 | 8:12 |
| 20 | 13.4 | 6:47 | 8:12 |
| 21 | 13.4 | 6:48 | 8:12 |
| 22 | 13.4 | 6:49 | 8:12 |
| 23 | 13.4 | 6:50 | 8:12 |
| 24 | 13.4 | 6:50 | 8:12 |
| 25 | 13.3 | 6:51 | 8:11 |
| 26 | 13.3 | 6:52 | 8:11 |
| 27 | 13.3 | 6:53 | 8:11 |
| 28 | 13.3 | 6:53 | 8:10 |
| 29 | 13.3 | 6:54 | 8:10 |
| 30 | 13.2 | 6:55 | 8:10 |
| 31 | 13.2 | 6:56 | 8:09 |
Solar energy in January
Average shortwave solar energy reaching the ground each day in January, about 5.42 kWh/m².
For context, solar energy here swings from a low near 2.77 kWh/m² to a high of 5.66 kWh/m² in December across the year — January's 5.42 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) | 5.6 | 5.6 | 5.6 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 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 | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.6 | Bright |
| 2 | 5.6 | Bright |
| 3 | 5.6 | Bright |
| 4 | 5.5 | Bright |
| 5 | 5.5 | Bright |
| 6 | 5.5 | Bright |
| 7 | 5.5 | Bright |
| 8 | 5.5 | Bright |
| 9 | 5.5 | Bright |
| 10 | 5.5 | Bright |
| 11 | 5.5 | Bright |
| 12 | 5.5 | Bright |
| 13 | 5.5 | Bright |
| 14 | 5.5 | Bright |
| 15 | 5.5 | Bright |
| 16 | 5.5 | Bright |
| 17 | 5.5 | Bright |
| 18 | 5.5 | Bright |
| 19 | 5.5 | 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 |
| 31 | 5.4 | Bright |
Is January a good time to visit Rio Negro?
Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
January is a reasonable time to visit Rio Negro for sightseeing.
What to pack for Rio Negro in January
From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In January, Rio Negro sees daytime highs around 27°C and nights near 18°C. Pack rain gear. Worth having: light clothes and sun protection. About 20 days see rain.
UV index in Rio Negro in January
Clear-sky midday UV in January peaks around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Rio Negro peaks around January 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (high).
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 | 9 | 6 | 6 | 5 | 7 | 8 | 11 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | High | High | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 14 | Extreme |
| Mar | 12 | Extreme |
| Apr | 9 | Very high |
| May | 6 | High |
| Jun | 6 | High |
| Jul | 5 | High |
| Aug | 7 | High |
| Sep | 8 | Very high |
| Oct | 11 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Air quality in Rio Negro 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 Rio Negro is worst in September — around 16 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (February, 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) | 9 | 9 | 9 | 11 | 12 | 12 | 14 | 15 | 16 | 11 | 10 | 9 |
| Level | Good | Good | Good | Good | Moderate | Good | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 9 | Good |
| Mar | 9 | Good |
| Apr | 11 | Good |
| May | 12 | Moderate |
| Jun | 12 | Good |
| Jul | 14 | Moderate |
| Aug | 15 | Moderate |
| Sep | 16 | Moderate |
| Oct | 11 | Good |
| Nov | 10 | Good |
| Dec | 9 | Good |
Where is Rio Negro?
Rio Negro sits at 26.1°S, 49.8°W, 795 m above sea level, in Brazil. The nearest listed city is Mafra, 1.0 km away.
Topography around Rio Negro
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rio Negro.
Within 3 km, the terrain around Rio Negro has only modest variations in elevation — a maximum elevation change of 110 m around an average of 800 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 196 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,275 m.
The land around Rio Negro is covered by trees (43%) and artificial surfaces (38%) within 3 km, trees (58%) and cropland (30%) within 16 km, and trees (68%) and cropland (23%) 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 Rio Negro (-26.1058°, -49.7975°, elevation 795 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. 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).