Jaru weather in January

In January, Jaru sees average daytime highs of 30°C and overnight lows near 22°C, with 275 mm of rain across 28.2 wet days and about 12.5 hours of daylight. It is the 11th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 1% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 12 h 36 min at the start of January to 12 h 30 min by month's end. Set against the rest of the year, January is Jaru's 11th-clearest and 6th-windiest month. For the whole year in context, see Jaru's year-round climate.

Daytime high: 30°; 11th warmest
Overnight low: 22°; 9th coldest
Rainfall: 275 mm; 28.2 wet days
Daylight: 12 h 30 min; 6:03 AM – 6:36 PM
Cloud cover: 88%; 11th clearest
Wind: 5 km/h; 6th windiest
Solar energy: 4.71 kWh/m²
Travel score: 2.9; out of 10

Jaru is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← December Jaru year-round climate February →Best places to visit in January

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical January day in Jaru reaches about 30°C in the afternoon and slips back to 22°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 32°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)	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30
Avg low (°C)	23	23	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	23	23	23	23

	Avg high (°C)	Avg low (°C)
1	30	23
2	30	23
3	30	22
4	30	22
5	30	22
6	30	22
7	30	22
8	30	22
9	30	22
10	30	22
11	30	22
12	30	22
13	30	22
14	30	22
15	30	22
16	30	22
17	30	22
18	30	22
19	30	22
20	30	22
21	30	22
22	30	22
23	30	22
24	30	22
25	30	22
26	30	22
27	30	22
28	30	23
29	30	23
30	30	23
31	30	23

How January really feels in Jaru

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.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

The story in January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Jaru weather by month

How January compares with the rest of the year at a glance. January is the 11th-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	30° / 22°	275	28.2	12.5	2.9
Feb	30° / 22°	271	26.2	12.3	2.8
Mar	30° / 22°	247	27.9	12.1	2.9
Apr	30° / 22°	153	23.1	11.8	3.3
May	30° / 22°	75	14.7	11.5	4.4
Jun	31° / 21°	17	3.9	11.4	5.2
Jul	33° / 20°	10	2.2	11.5	4.7
Aug	34° / 21°	25	4.9	11.7	3.6
Sep	34° / 22°	82	13.5	11.9	3.0
Oct	32° / 23°	136	20.3	12.2	2.8
Nov	31° / 23°	199	23.8	12.5	2.9
Dec	30° / 23°	243	27.1	12.6	2.9

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 6% of January, with mostly cloudy or overcast conditions the remaining 94%.

	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 (%)	5	5	5	5	5	5	5	5	5	6	6	6	7	7	7	7	8	8	8	8	8	8	8	7	7	7	7	7	7	7	6
Cloudier (%)	95	95	95	95	95	95	95	95	95	94	94	94	93	93	93	93	92	92	92	92	92	92	92	93	93	93	93	93	93	93	94

	Clearer (%)	Cloudier (%)
1	5	95
2	5	95
3	5	95
4	5	95
5	5	95
6	5	95
7	5	95
8	5	95
9	5	95
10	6	94
11	6	94
12	6	94
13	7	93
14	7	93
15	7	93
16	7	93
17	8	92
18	8	92
19	8	92
20	8	92
21	8	92
22	8	92
23	8	92
24	7	93
25	7	93
26	7	93
27	7	93
28	7	93
29	7	93
30	7	93
31	6	94

Chance of precipitation in January

Any precipitation

Jaru gets around 275 mm of rain over 28.2 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 91% and peaks near 93% 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 (%)	90	91	91	91	92	92	92	92	93	93	93	93	93	92	92	92	91	91	90	90	90	90	90	90	90	90	90	90	90	91	91

	Rain chance (%)
1	90
2	91
3	91
4	91
5	92
6	92
7	92
8	92
9	93
10	93
11	93
12	93
13	93
14	92
15	92
16	92
17	91
18	91
19	90
20	90
21	90
22	90
23	90
24	90
25	90
26	90
27	90
28	90
29	90
30	91
31	91

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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 93% 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
Oppressive (%)	94	94	93	93	93	93	93	92	92	92	92	92	92	92	92	92	93	93	93	93	93	94	94	94	94	94	94	94	94	94	94
Miserable (%)	6	6	7	7	7	7	7	8	8	8	8	8	8	8	8	8	7	7	7	7	7	6	6	6	6	6	6	6	6	6	6

	Oppressive (%)	Miserable (%)
1	94	6
2	94	6
3	93	7
4	93	7
5	93	7
6	93	7
7	93	7
8	92	8
9	92	8
10	92	8
11	92	8
12	92	8
13	92	8
14	92	8
15	92	8
16	92	8
17	93	7
18	93	7
19	93	7
20	93	7
21	93	7
22	94	6
23	94	6
24	94	6
25	94	6
26	94	6
27	94	6
28	94	6
29	94	6
30	94	6
31	94	6

Wind in January

Winds average 5 km/h in January.

Across January, daily wind ranges from about 5 km/h on the calmest days to 5 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)	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
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	5	calm
2	5	calm
3	5	calm
4	5	calm
5	5	calm
6	5	calm
7	5	calm
8	5	calm
9	5	calm
10	5	calm
11	5	calm
12	5	calm
13	5	calm
14	5	calm
15	5	calm
16	5	calm
17	5	calm
18	5	calm
19	5	calm
20	5	calm
21	5	calm
22	5	calm
23	5	calm
24	5	calm
25	5	calm
26	5	calm
27	5	calm
28	5	calm
29	5	calm
30	5	calm
31	5	calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 12 h 36 min at the start of January to 12 h 30 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 6:09 AM, and sunset from 6:31 PM to 6:37 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)	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.6	12.5	12.5	12.5	12.5	12.5	12.5	12.5	12.5	12.5	12.5	12.5	12.5	12.5	12.5	12.5	12.5
Sunrise (AM)	5:55	5:56	5:56	5:57	5:57	5:58	5:58	5:59	5:59	6:00	6:00	6:01	6:01	6:02	6:02	6:03	6:03	6:04	6:04	6:05	6:05	6:06	6:06	6:06	6:07	6:07	6:08	6:08	6:09	6:09	6:09
Sunset (PM)	6:31	6:31	6:32	6:32	6:33	6:33	6:33	6:34	6:34	6:34	6:34	6:35	6:35	6:35	6:35	6:36	6:36	6:36	6:36	6:36	6:36	6:37	6:37	6:37	6:37	6:37	6:37	6:37	6:37	6:37	6:37

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.6	5:55	6:31
2	12.6	5:56	6:31
3	12.6	5:56	6:32
4	12.6	5:57	6:32
5	12.6	5:57	6:33
6	12.6	5:58	6:33
7	12.6	5:58	6:33
8	12.6	5:59	6:34
9	12.6	5:59	6:34
10	12.6	6:00	6:34
11	12.6	6:00	6:34
12	12.6	6:01	6:35
13	12.6	6:01	6:35
14	12.6	6:02	6:35
15	12.6	6:02	6:35
16	12.5	6:03	6:36
17	12.5	6:03	6:36
18	12.5	6:04	6:36
19	12.5	6:04	6:36
20	12.5	6:05	6:36
21	12.5	6:05	6:36
22	12.5	6:06	6:37
23	12.5	6:06	6:37
24	12.5	6:06	6:37
25	12.5	6:07	6:37
26	12.5	6:07	6:37
27	12.5	6:08	6:37
28	12.5	6:08	6:37
29	12.5	6:09	6:37
30	12.5	6:09	6:37
31	12.5	6:09	6:37

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.71 kWh/m².

For context, solar energy here swings from a low near 4.46 kWh/m² to a high of 5.68 kWh/m² in October across the year — January's 4.71 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)	4.8	4.8	4.7	4.7	4.7	4.7	4.7	4.7	4.7	4.7	4.7	4.7	4.7	4.7	4.7	4.7	4.7	4.7	4.8	4.8	4.8	4.8	4.8	4.8	4.8	4.8	4.8	4.8	4.7	4.7	4.7
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	4.8	Bright
2	4.8	Bright
3	4.7	Bright
4	4.7	Bright
5	4.7	Bright
6	4.7	Bright
7	4.7	Bright
8	4.7	Bright
9	4.7	Bright
10	4.7	Bright
11	4.7	Bright
12	4.7	Bright
13	4.7	Bright
14	4.7	Bright
15	4.7	Bright
16	4.7	Bright
17	4.7	Bright
18	4.7	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	4.7	Bright
30	4.7	Bright
31	4.7	Bright

Planning a trip in January

Hazard calendar for Jaru

In seasonPeak

In January, Jaru sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Jaru's rainy season runs October–April, when most of the year's rain falls.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is January a good time to visit Jaru?

Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

2.9

Sightseeing

7th-best month of the year

3.9

Beach & pool

11th-best month of the year

January is a weaker month for outdoor sightseeing in Jaru.

What to pack for Jaru in January

From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In January, Jaru sees daytime highs around 30°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.

light clothesrain gearsun protection

UV index in Jaru in January

LowModerateHighVery highExtreme

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 Jaru peaks around January 24 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 12 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	15	15	15	14	10	9	9	6	3	11	13	14
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high	High	Moderate	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	15	Extreme
Feb	15	Extreme
Mar	15	Extreme
Apr	14	Extreme
May	10	Extreme
Jun	9	Very high
Jul	9	Very high
Aug	6	High
Sep	3	Moderate
Oct	11	Extreme
Nov	13	Extreme
Dec	14	Extreme

Air quality in Jaru in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Jaru is worst in September — around 57 µg/m³ PM2.5 (unhealthy), about 7.3× the cleanest month (June, 8 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)	12	12	13	10	9	8	8	39	57	24	17	14
Level	Moderate	Good	Moderate	Good	Good	Good	Good	Poor	Unhealthy	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	12	Moderate
Feb	12	Good
Mar	13	Moderate
Apr	10	Good
May	9	Good
Jun	8	Good
Jul	8	Good
Aug	39	Poor
Sep	57	Unhealthy
Oct	24	Moderate
Nov	17	Moderate
Dec	14	Moderate

Location & terrain

Where is Jaru?

Jaru sits at 10.4°S, 62.5°W, 159 m above sea level, in Brazil. The nearest listed city is Ouro Preto do Oeste, 44 km away.

Topography around Jaru

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Jaru.

Within 3 km, the terrain around Jaru has only modest variations in elevation — a maximum elevation change of 78 m around an average of 161 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 230 m; within 80 km, significant variations in elevation — a maximum elevation change of 465 m.

The land around Jaru is covered by grassland (40%), artificial surfaces (31%) and trees (27%) within 3 km, grassland (73%) and trees (25%) within 16 km, and grassland (66%) and trees (33%) within 80 km.

3 km

78 m

grassland 40%

16 km

230 m

grassland 73%

80 km

465 m

grassland 66%

treesgrasslandartificial surfacesbare terrainwater

← December Jaru year-round climate February →Best places to visit in January

January weather nearby: Ouro Preto do Oeste 44 km · Ji Paraná 75 km · Ariquemes 86 km · Presidente Médici 103 km · Alto Paraíso 122 km · Machadinho d'Oeste 123 km · São Miguel do Guaporé 142 km · Buritis 151 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 Jaru (-10.4389°, -62.4664°, elevation 159 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).

	Avg high (°C)	Avg low (°C)
1	30	23
2	30	23
3	30	22
4	30	22
5	30	22
6	30	22
7	30	22
8	30	22
9	30	22
10	30	22
11	30	22
12	30	22
13	30	22
14	30	22
15	30	22
16	30	22
17	30	22
18	30	22
19	30	22
20	30	22
21	30	22
22	30	22
23	30	22
24	30	22
25	30	22
26	30	22
27	30	22
28	30	23
29	30	23
30	30	23
31	30	23

	Clearer (%)	Cloudier (%)
1	5	95
2	5	95
3	5	95
4	5	95
5	5	95
6	5	95
7	5	95
8	5	95
9	5	95
10	6	94
11	6	94
12	6	94
13	7	93
14	7	93
15	7	93
16	7	93
17	8	92
18	8	92
19	8	92
20	8	92
21	8	92
22	8	92
23	8	92
24	7	93
25	7	93
26	7	93
27	7	93
28	7	93
29	7	93
30	7	93
31	6	94

	Rain chance (%)
1	90
2	91
3	91
4	91
5	92
6	92
7	92
8	92
9	93
10	93
11	93
12	93
13	93
14	92
15	92
16	92
17	91
18	91
19	90
20	90
21	90
22	90
23	90
24	90
25	90
26	90
27	90
28	90
29	90
30	91
31	91

	Oppressive (%)	Miserable (%)
1	94	6
2	94	6
3	93	7
4	93	7
5	93	7
6	93	7
7	93	7
8	92	8
9	92	8
10	92	8
11	92	8
12	92	8
13	92	8
14	92	8
15	92	8
16	92	8
17	93	7
18	93	7
19	93	7
20	93	7
21	93	7
22	94	6
23	94	6
24	94	6
25	94	6
26	94	6
27	94	6
28	94	6
29	94	6
30	94	6
31	94	6

	Avg high (°C)	Avg low (°C)
1	30	23
2	30	23
3	30	22
4	30	22
5	30	22
6	30	22
7	30	22
8	30	22
9	30	22
10	30	22
11	30	22
12	30	22
13	30	22
14	30	22
15	30	22
16	30	22
17	30	22
18	30	22
19	30	22
20	30	22
21	30	22
22	30	22
23	30	22
24	30	22
25	30	22
26	30	22
27	30	22
28	30	23
29	30	23
30	30	23
31	30	23

	Clearer (%)	Cloudier (%)
1	5	95
2	5	95
3	5	95
4	5	95
5	5	95
6	5	95
7	5	95
8	5	95
9	5	95
10	6	94
11	6	94
12	6	94
13	7	93
14	7	93
15	7	93
16	7	93
17	8	92
18	8	92
19	8	92
20	8	92
21	8	92
22	8	92
23	8	92
24	7	93
25	7	93
26	7	93
27	7	93
28	7	93
29	7	93
30	7	93
31	6	94

	Rain chance (%)
1	90
2	91
3	91
4	91
5	92
6	92
7	92
8	92
9	93
10	93
11	93
12	93
13	93
14	92
15	92
16	92
17	91
18	91
19	90
20	90
21	90
22	90
23	90
24	90
25	90
26	90
27	90
28	90
29	90
30	91
31	91

	Oppressive (%)	Miserable (%)
1	94	6
2	94	6
3	93	7
4	93	7
5	93	7
6	93	7
7	93	7
8	92	8
9	92	8
10	92	8
11	92	8
12	92	8
13	92	8
14	92	8
15	92	8
16	92	8
17	93	7
18	93	7
19	93	7
20	93	7
21	93	7
22	94	6
23	94	6
24	94	6
25	94	6
26	94	6
27	94	6
28	94	6
29	94	6
30	94	6
31	94	6

	Avg high (°C)	Avg low (°C)
1	30	23
2	30	23
3	30	22
4	30	22
5	30	22
6	30	22
7	30	22
8	30	22
9	30	22
10	30	22
11	30	22
12	30	22
13	30	22
14	30	22
15	30	22
16	30	22
17	30	22
18	30	22
19	30	22
20	30	22
21	30	22
22	30	22
23	30	22
24	30	22
25	30	22
26	30	22
27	30	22
28	30	23
29	30	23
30	30	23
31	30	23

	Clearer (%)	Cloudier (%)
1	5	95
2	5	95
3	5	95
4	5	95
5	5	95
6	5	95
7	5	95
8	5	95
9	5	95
10	6	94
11	6	94
12	6	94
13	7	93
14	7	93
15	7	93
16	7	93
17	8	92
18	8	92
19	8	92
20	8	92
21	8	92
22	8	92
23	8	92
24	7	93
25	7	93
26	7	93
27	7	93
28	7	93
29	7	93
30	7	93
31	6	94

	Rain chance (%)
1	90
2	91
3	91
4	91
5	92
6	92
7	92
8	92
9	93
10	93
11	93
12	93
13	93
14	92
15	92
16	92
17	91
18	91
19	90
20	90
21	90
22	90
23	90
24	90
25	90
26	90
27	90
28	90
29	90
30	91
31	91

	Oppressive (%)	Miserable (%)
1	94	6
2	94	6
3	93	7
4	93	7
5	93	7
6	93	7
7	93	7
8	92	8
9	92	8
10	92	8
11	92	8
12	92	8
13	92	8
14	92	8
15	92	8
16	92	8
17	93	7
18	93	7
19	93	7
20	93	7
21	93	7
22	94	6
23	94	6
24	94	6
25	94	6
26	94	6
27	94	6
28	94	6
29	94	6
30	94	6
31	94	6