Cajari weather in January

In January, Cajari sees average daytime highs of 32°C and overnight lows near 25°C, with 205 mm of rain across 24.4 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 5% 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 Cajari's 9th-clearest and 6th-windiest month. For the whole year in context, see Cajari's year-round climate.

Daytime high: 32°; 6th warmest
Overnight low: 25°; 8th coldest
Rainfall: 205 mm; 24.4 wet days
Daylight: 12 h 12 min; 6:04 AM – 6:15 PM
Cloud cover: 79%; 9th clearest
Wind: 8 km/h; 6th windiest
Solar energy: 4.82 kWh/m²
Travel score: 2.7; out of 10

← December Cajari 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 32°C through the month.

A typical January day in Cajari reaches about 32°C in the afternoon and slips back to 25°C overnight — a 7°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	32	32	32	32	31	31	31	31	31	31	31	31	31	31	31
Avg low (°C)	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	24	24	24	24	24	24

	Avg high (°C)	Avg low (°C)
1	32	25
2	32	25
3	32	25
4	32	25
5	32	25
6	32	25
7	32	25
8	32	25
9	32	25
10	32	25
11	32	25
12	32	25
13	32	25
14	32	25
15	32	25
16	32	25
17	32	25
18	32	25
19	32	25
20	32	25
21	31	25
22	31	25
23	31	25
24	31	25
25	31	25
26	31	24
27	31	24
28	31	24
29	31	24
30	31	24
31	31	24

How January really feels in Cajari

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.

Cajari 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° / 25°	205	24.4	12.2	2.7
Feb	31° / 24°	279	25.5	12.1	2.5
Mar	31° / 24°	355	29.5	12	2.4
Apr	31° / 24°	367	28.2	11.9	2.4
May	31° / 25°	202	23.4	11.9	3.0
Jun	31° / 24°	79	14.5	11.8	3.9
Jul	32° / 24°	50	10.1	11.8	4.4
Aug	33° / 24°	15	3.9	11.9	4.2
Sep	34° / 25°	9	2	12	3.7
Oct	34° / 25°	18	3.5	12.1	3.3
Nov	34° / 25°	39	6.6	12.2	3.3
Dec	33° / 25°	91	14	12.2	3.1

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 11% of January, with mostly cloudy or overcast conditions the remaining 83%.

	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 (%)	26	26	24	24	22	22	20	19	18	17	16	15	14	14	13	13	13	13	13	14	14	15	15	15	15	15	15	15	16	16	16
Cloudier (%)	74	74	76	76	78	78	80	81	82	83	84	85	86	86	87	87	87	87	87	86	86	85	85	85	85	85	85	85	84	84	84

	Clearer (%)	Cloudier (%)
1	26	74
2	26	74
3	24	76
4	24	76
5	22	78
6	22	78
7	20	80
8	19	81
9	18	82
10	17	83
11	16	84
12	15	85
13	14	86
14	14	86
15	13	87
16	13	87
17	13	87
18	13	87
19	13	87
20	14	86
21	14	86
22	15	85
23	15	85
24	15	85
25	15	85
26	15	85
27	15	85
28	15	85
29	16	84
30	16	84
31	16	84

Chance of precipitation in January

Any precipitation

Cajari gets around 205 mm of rain over 24.4 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 79% and peaks near 87% 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 (%)	67	68	69	70	71	72	73	73	74	75	76	77	78	79	80	80	81	81	82	82	83	83	84	85	85	85	86	86	86	87	87

	Rain chance (%)
1	67
2	68
3	69
4	70
5	71
6	72
7	73
8	73
9	74
10	75
11	76
12	77
13	78
14	79
15	80
16	80
17	81
18	81
19	82
20	82
21	83
22	83
23	84
24	85
25	85
26	85
27	86
28	86
29	86
30	87
31	87

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 62% 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 (%)	66	66	66	66	66	67	67	67	67	67	67	67	67	66	66	65	64	63	63	62	61	60	59	59	58	57	56	56	55	54	53
Miserable (%)	34	34	34	34	34	33	33	33	33	33	33	33	33	34	34	35	36	37	37	38	39	40	41	41	42	43	44	44	45	46	47

	Oppressive (%)	Miserable (%)
1	66	34
2	66	34
3	66	34
4	66	34
5	66	34
6	67	33
7	67	33
8	67	33
9	67	33
10	67	33
11	67	33
12	67	33
13	67	33
14	66	34
15	66	34
16	65	35
17	64	36
18	63	37
19	63	37
20	62	38
21	61	39
22	60	40
23	59	41
24	59	41
25	58	42
26	57	43
27	56	44
28	56	44
29	55	45
30	54	46
31	53	47

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 9 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)	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	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	9	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	8	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

DaylightNight

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 5:58 AM to 6:09 AM, and sunset from 6:09 PM to 6:18 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	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.1	12.1	12.1
Sunrise (AM)	5:58	5:58	5:58	5:59	5:59	6:00	6:00	6:01	6:01	6:02	6:02	6:03	6:03	6:03	6:04	6:04	6:05	6:05	6:05	6:06	6:06	6:06	6:07	6:07	6:07	6:08	6:08	6:08	6:09	6:09	6:09
Sunset (PM)	6:09	6:09	6:10	6:10	6:11	6:11	6:11	6:12	6:12	6:12	6:13	6:13	6:14	6:14	6:14	6:15	6:15	6:15	6:15	6:16	6:16	6:16	6:16	6:17	6:17	6:17	6:17	6:17	6:17	6:18	6:18

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.2	5:58	6:09
2	12.2	5:58	6:09
3	12.2	5:58	6:10
4	12.2	5:59	6:10
5	12.2	5:59	6:11
6	12.2	6:00	6:11
7	12.2	6:00	6:11
8	12.2	6:01	6:12
9	12.2	6:01	6:12
10	12.2	6:02	6:12
11	12.2	6:02	6:13
12	12.2	6:03	6:13
13	12.2	6:03	6:14
14	12.2	6:03	6:14
15	12.2	6:04	6:14
16	12.2	6:04	6:15
17	12.2	6:05	6:15
18	12.2	6:05	6:15
19	12.2	6:05	6:15
20	12.2	6:06	6:16
21	12.2	6:06	6:16
22	12.2	6:06	6:16
23	12.2	6:07	6:16
24	12.2	6:07	6:17
25	12.2	6:07	6:17
26	12.2	6:08	6:17
27	12.2	6:08	6:17
28	12.2	6:08	6:17
29	12.1	6:09	6:17
30	12.1	6:09	6:18
31	12.1	6:09	6:18

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.82 kWh/m².

For context, solar energy here swings from a low near 4.22 kWh/m² to a high of 6.22 kWh/m² in October across the year — January's 4.82 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	5.0	5.0	5.0	5.0	5.0	4.9	4.9	4.9	4.8	4.8	4.8	4.8	4.8	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
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	5.0	Bright
3	5.0	Bright
4	5.0	Bright
5	5.0	Bright
6	5.0	Bright
7	4.9	Bright
8	4.9	Bright
9	4.9	Bright
10	4.8	Bright
11	4.8	Bright
12	4.8	Bright
13	4.8	Bright
14	4.8	Bright
15	4.8	Bright
16	4.8	Bright
17	4.7	Bright
18	4.7	Bright
19	4.7	Bright
20	4.7	Bright
21	4.7	Bright
22	4.7	Bright
23	4.7	Bright
24	4.7	Bright
25	4.7	Bright
26	4.7	Bright
27	4.7	Bright
28	4.7	Bright
29	4.7	Bright
30	4.7	Bright
31	4.7	Bright

Planning a trip in January

Hazard calendar for Cajari

In seasonPeak

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

Cajari's monsoon runs January–May, when most of the year's rain falls.

Monsoon

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is January a good time to visit Cajari?

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

2.7

Sightseeing

9th-best month of the year

4.2

Beach & pool

9th-best month of the year

January is a weaker month for outdoor sightseeing in Cajari.

What to pack for Cajari in January

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

In January, Cajari sees daytime highs around 32°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

UV index in Cajari in January

LowModerateHighVery highExtreme

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 Cajari peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 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	15	14	11	10	10	10	12	12	10	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	15	Extreme
Apr	14	Extreme
May	11	Extreme
Jun	10	Extreme
Jul	10	Very high
Aug	10	Extreme
Sep	12	Extreme
Oct	12	Extreme
Nov	10	Extreme
Dec	11	Extreme

Air quality in Cajari 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 Cajari is worst in November — around 18 µg/m³ PM2.5 (moderate), about 2.1× 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	16	14	10	9	9	10	9	13	18	16
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	16	Moderate
Apr	14	Moderate
May	10	Good
Jun	9	Good
Jul	9	Good
Aug	10	Good
Sep	9	Good
Oct	13	Moderate
Nov	18	Moderate
Dec	16	Moderate

Location & terrain

Where is Cajari?

Cajari sits at 3.3°S, 45.0°W, 10 m above sea level, in Brazil. The nearest listed city is Viana, 11 km away.

Topography around Cajari

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

Within 3 km, the terrain around Cajari has only modest variations in elevation — a maximum elevation change of 28 m around an average of 6 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 55 m; within 80 km, only modest variations in elevation — a maximum elevation change of 169 m.

The land around Cajari is covered by grassland (65%) within 3 km, grassland (44%), trees (26%) and wetland (22%) within 16 km, and grassland (45%) and trees (37%) within 80 km.

3 km

28 m

grassland 65%

16 km

55 m

grassland 44%

80 km

169 m

grassland 45%

treesgrasslandcroplandartificial surfaceswaterwetlandmangroves

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

January weather nearby: Viana 11 km · Penalva 18 km · Vitória do Mearim 22 km · Matinha 25 km · Arari 30 km · Monção 33 km · Anajatuba 44 km · São João Batista 47 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 Cajari (-3.3208°, -45.0108°, elevation 10 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	32	25
2	32	25
3	32	25
4	32	25
5	32	25
6	32	25
7	32	25
8	32	25
9	32	25
10	32	25
11	32	25
12	32	25
13	32	25
14	32	25
15	32	25
16	32	25
17	32	25
18	32	25
19	32	25
20	32	25
21	31	25
22	31	25
23	31	25
24	31	25
25	31	25
26	31	24
27	31	24
28	31	24
29	31	24
30	31	24
31	31	24

	Clearer (%)	Cloudier (%)
1	26	74
2	26	74
3	24	76
4	24	76
5	22	78
6	22	78
7	20	80
8	19	81
9	18	82
10	17	83
11	16	84
12	15	85
13	14	86
14	14	86
15	13	87
16	13	87
17	13	87
18	13	87
19	13	87
20	14	86
21	14	86
22	15	85
23	15	85
24	15	85
25	15	85
26	15	85
27	15	85
28	15	85
29	16	84
30	16	84
31	16	84

	Rain chance (%)
1	67
2	68
3	69
4	70
5	71
6	72
7	73
8	73
9	74
10	75
11	76
12	77
13	78
14	79
15	80
16	80
17	81
18	81
19	82
20	82
21	83
22	83
23	84
24	85
25	85
26	85
27	86
28	86
29	86
30	87
31	87

	Oppressive (%)	Miserable (%)
1	66	34
2	66	34
3	66	34
4	66	34
5	66	34
6	67	33
7	67	33
8	67	33
9	67	33
10	67	33
11	67	33
12	67	33
13	67	33
14	66	34
15	66	34
16	65	35
17	64	36
18	63	37
19	63	37
20	62	38
21	61	39
22	60	40
23	59	41
24	59	41
25	58	42
26	57	43
27	56	44
28	56	44
29	55	45
30	54	46
31	53	47

	Avg high (°C)	Avg low (°C)
1	32	25
2	32	25
3	32	25
4	32	25
5	32	25
6	32	25
7	32	25
8	32	25
9	32	25
10	32	25
11	32	25
12	32	25
13	32	25
14	32	25
15	32	25
16	32	25
17	32	25
18	32	25
19	32	25
20	32	25
21	31	25
22	31	25
23	31	25
24	31	25
25	31	25
26	31	24
27	31	24
28	31	24
29	31	24
30	31	24
31	31	24

	Clearer (%)	Cloudier (%)
1	26	74
2	26	74
3	24	76
4	24	76
5	22	78
6	22	78
7	20	80
8	19	81
9	18	82
10	17	83
11	16	84
12	15	85
13	14	86
14	14	86
15	13	87
16	13	87
17	13	87
18	13	87
19	13	87
20	14	86
21	14	86
22	15	85
23	15	85
24	15	85
25	15	85
26	15	85
27	15	85
28	15	85
29	16	84
30	16	84
31	16	84

	Rain chance (%)
1	67
2	68
3	69
4	70
5	71
6	72
7	73
8	73
9	74
10	75
11	76
12	77
13	78
14	79
15	80
16	80
17	81
18	81
19	82
20	82
21	83
22	83
23	84
24	85
25	85
26	85
27	86
28	86
29	86
30	87
31	87

	Oppressive (%)	Miserable (%)
1	66	34
2	66	34
3	66	34
4	66	34
5	66	34
6	67	33
7	67	33
8	67	33
9	67	33
10	67	33
11	67	33
12	67	33
13	67	33
14	66	34
15	66	34
16	65	35
17	64	36
18	63	37
19	63	37
20	62	38
21	61	39
22	60	40
23	59	41
24	59	41
25	58	42
26	57	43
27	56	44
28	56	44
29	55	45
30	54	46
31	53	47

	Avg high (°C)	Avg low (°C)
1	32	25
2	32	25
3	32	25
4	32	25
5	32	25
6	32	25
7	32	25
8	32	25
9	32	25
10	32	25
11	32	25
12	32	25
13	32	25
14	32	25
15	32	25
16	32	25
17	32	25
18	32	25
19	32	25
20	32	25
21	31	25
22	31	25
23	31	25
24	31	25
25	31	25
26	31	24
27	31	24
28	31	24
29	31	24
30	31	24
31	31	24

	Clearer (%)	Cloudier (%)
1	26	74
2	26	74
3	24	76
4	24	76
5	22	78
6	22	78
7	20	80
8	19	81
9	18	82
10	17	83
11	16	84
12	15	85
13	14	86
14	14	86
15	13	87
16	13	87
17	13	87
18	13	87
19	13	87
20	14	86
21	14	86
22	15	85
23	15	85
24	15	85
25	15	85
26	15	85
27	15	85
28	15	85
29	16	84
30	16	84
31	16	84

	Rain chance (%)
1	67
2	68
3	69
4	70
5	71
6	72
7	73
8	73
9	74
10	75
11	76
12	77
13	78
14	79
15	80
16	80
17	81
18	81
19	82
20	82
21	83
22	83
23	84
24	85
25	85
26	85
27	86
28	86
29	86
30	87
31	87

	Oppressive (%)	Miserable (%)
1	66	34
2	66	34
3	66	34
4	66	34
5	66	34
6	67	33
7	67	33
8	67	33
9	67	33
10	67	33
11	67	33
12	67	33
13	67	33
14	66	34
15	66	34
16	65	35
17	64	36
18	63	37
19	63	37
20	62	38
21	61	39
22	60	40
23	59	41
24	59	41
25	58	42
26	57	43
27	56	44
28	56	44
29	55	45
30	54	46
31	53	47