Castilho weather in January

In January, Castilho sees average daytime highs of 31°C and overnight lows near 23°C, with 230 mm of rain across 21.9 wet days and about 13.1 hours of daylight. It is the 6th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 17% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 13 h 12 min at the start of January to 13 hours by month's end. Set against the rest of the year, January is Castilho's 12th-clearest and 10th-windiest month. For the whole year in context, see Castilho's year-round climate.

Daytime high
31°
6th warmest
Overnight low
23°
12th coldest
Rainfall
230 mm
21.9 wet days
Daylight
13 h 06 min
7:01 AM – 8:09 PM
Cloud cover
72%
12th clearest
Wind
8 km/h
10th windiest
Solar energy
5.81 kWh/m²
Travel score
3.2
out of 10

Castilho is human settlement in Brazil.

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical January day in Castilho reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 34°C. Set against its neighbours, January runs on par with December and on par with February.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13124
23124
33124
43124
53124
63124
73123
83123
93123
103123
113123
123123
133123
143123
153123
163123
173123
183123
193123
203123
213123
223123
233123
243123
253124
263124
273124
283124
293124
303124
313124

How January really feels in Castilho

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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Castilho weather by month

How January compares with the rest of the year at a glance. January is the 6th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°23021.913.13.2
Feb31° / 23°18819.212.73.2
Mar31° / 23°15717.812.13.7
Apr30° / 21°617.911.55.2
May28° / 18°475.7117.0
Jun28° / 17°263.510.87.7
Jul28° / 17°152.210.97.5
Aug31° / 18°212.911.35.8
Sep32° / 20°596.811.94.5
Oct32° / 22°10612.412.53.7
Nov32° / 23°14115.5133.5
Dec31° / 23°18920.613.23.2

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of January, with mostly cloudy or overcast conditions the remaining 68%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13466
23367
33268
43268
53268
63169
73169
83169
92971
103070
113070
122971
133070
143070
153070
163169
173268
183268
193268
203367
213367
223367
233367
243367
253466
263565
273565
283565
293664
303763
313862

Chance of precipitation in January

Any precipitation

Castilho gets around 230 mm of rain over 21.9 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 69% and peaks near 71% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
170
270
370
471
571
671
771
871
971
1070
1170
1270
1370
1469
1569
1669
1769
1869
1969
2069
2169
2269
2369
2469
2569
2669
2769
2868
2968
3068
3167

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 83% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1114823
2113833
3113824
4113824
5113824
6113815
7112825
8112825
9112825
10112825
11112825
12112825
13112825
14112825
15112825
16112825
17112834
18112834
19112834
20112834
21112834
22112834
23112834
24111844
25111844
26111844
27111844
28111844
29111844
30110854
31110845

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 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 13 h 12 min at the start of January to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over January. Sunrise moves from 6:52 AM to 7:11 AM, and sunset from 8:07 PM to 8:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.26:528:07
213.26:528:07
313.26:538:07
413.26:538:07
513.26:548:08
613.26:558:08
713.26:558:08
813.26:568:08
913.26:578:09
1013.26:578:09
1113.26:588:09
1213.26:588:09
1313.26:598:09
1413.27:008:09
1513.17:008:09
1613.17:018:09
1713.17:028:09
1813.17:028:10
1913.17:038:10
2013.17:048:09
2113.17:048:09
2213.17:058:09
2313.17:068:09
2413.07:068:09
2513.07:078:09
2613.07:088:09
2713.07:088:09
2813.07:098:09
2913.07:098:08
3013.07:108:08
3113.07:118:08

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.81 kWh/m².

For context, solar energy here swings from a low near 3.84 kWh/m² to a high of 6.22 kWh/m² in November across the year — January's 5.81 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in January

Hazard calendar for Castilho

In seasonPeak

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

Castilho's monsoon runs October–March, 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 Castilho?

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

3.2
Sightseeing
10th-best month of the year
4.8
Beach & pool
12th-best month of the year

January is a weaker month for outdoor sightseeing in Castilho.

What to pack for Castilho in January

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

In January, Castilho sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Castilho 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 Castilho peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 7 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 21UV 15Jun 23UV 7
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun7High
Jul7High
Aug8Very high
Sep7Very high
Oct10Extreme
Nov12Extreme
Dec13Extreme

Air quality in Castilho 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 Castilho is worst in September — around 20 µg/m³ PM2.5 (moderate), about 3.4× the cleanest month (July, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1719 µg/m³Jul 106 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar6Good
Apr6Good
May7Good
Jun6Good
Jul6Good
Aug10Good
Sep20Moderate
Oct12Moderate
Nov6Good
Dec6Good
Location & terrain

Where is Castilho?

Castilho sits at 20.9°S, 51.5°W, 382 m above sea level, in Brazil. The nearest listed city is Andradina, 12 km away.

Topography around Castilho

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

Within 3 km, the terrain around Castilho has only modest variations in elevation — a maximum elevation change of 115 m around an average of 368 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 181 m; within 80 km, significant variations in elevation — a maximum elevation change of 260 m.

The land around Castilho is covered by cropland (52%) and grassland (31%) within 3 km, cropland (50%) and grassland (32%) within 16 km, and cropland (37%), grassland (31%) and trees (24%) within 80 km.

3 km
115 m
16 km
181 m
80 km
260 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Andradina 12 km · Três Lagoas 24 km · Pereira Barreto 47 km · Mirandópolis 49 km · Ilha Solteira 51 km · Tupi Paulista 57 km · Dracena 68 km · Junqueirópolis 72 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
Roman Catholic 57%Evangelical 27%none 9%other 4%

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 Castilho (-20.8722°, -51.4875°, elevation 382 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).