Teresina weather in January

In January, Teresina sees average daytime highs of 32°C and overnight lows near 23°C, with 235 mm of rain across 22.5 wet days and about 12.3 hours of daylight. It is the 8th-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 9% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 12 h 18 min at the start of January to 12 h 12 min by month's end. Set against the rest of the year, January is Teresina's 10th-clearest and 9th-windiest month. For the whole year in context, see Teresina's year-round climate.

Daytime high
32°
8th warmest
Overnight low
23°
7th coldest
Rainfall
235 mm
22.5 wet days
Daylight
12 h 18 min
5:53 AM – 6:08 PM
Cloud cover
75%
10th clearest
Wind
5 km/h
9th windiest
Solar energy
5.03 kWh/m²
Travel score
2.7
out of 10

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 Teresina reaches about 32°C in the afternoon and slips back to 23°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 35°C. Set against its neighbours, January runs about 2°C cooler than December and about 1°C warmer than February.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13324
23324
33324
43324
53324
63324
73324
83324
93324
103324
113224
123224
133223
143223
153223
163223
173223
183223
193223
203223
213223
223223
233223
243223
253223
263223
273223
283223
293223
303223
313223

How January really feels in Teresina

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.

Teresina weather by month

How January compares with the rest of the year at a glance. January is the 8th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 23°23522.512.32.7
Feb32° / 23°28122.612.22.7
Mar31° / 23°32826.9122.6
Apr31° / 23°26423.311.92.9
May32° / 23°12412.811.83.8
Jun33° / 23°162.911.74.3
Jul33° / 23°91.611.74.1
Aug35° / 24°20.511.83.3
Sep36° / 24°30.9122.4
Oct37° / 25°15212.12.0
Nov36° / 25°415.812.22.2
Dec34° / 24°9311.312.32.6

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 15% of January, with mostly cloudy or overcast conditions the remaining 76%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13367
23169
33070
43070
52872
62872
72674
82674
92476
102476
112377
122278
132278
142179
152179
162179
172080
182080
192179
202179
212278
222278
232278
242377
252377
262377
272377
282377
292377
302377
312476

Chance of precipitation in January

Any precipitation

Teresina gets around 235 mm of rain over 22.5 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 72% and peaks near 77% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
159
260
362
463
565
666
767
869
970
1071
1172
1273
1375
1475
1576
1677
1777
1877
1977
2077
2177
2276
2376
2476
2575
2675
2774
2874
2973
3073
3172

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 82% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1113815
2112816
3111826
4110827
519837
619837
718838
817848
917839
1016849
11168310
12058510
13058411
14058411
15048412
16048412
17048313
18048313
19048214
20048214
21048214
22038215
23038215
24038116
25038116
26038116
27038017
28038017
29037918
30037918
31037918

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

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 12 h 18 min at the start of January to 12 h 12 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 5:46 AM to 5:58 AM, and sunset from 6:03 PM to 6:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:466:03
212.35:466:03
312.35:476:04
412.35:476:04
512.35:486:05
612.35:486:05
712.35:496:05
812.35:496:06
912.35:496:06
1012.35:506:07
1112.35:506:07
1212.35:516:07
1312.35:516:08
1412.35:526:08
1512.35:526:08
1612.35:536:08
1712.35:536:09
1812.35:536:09
1912.35:546:09
2012.35:546:09
2112.35:556:10
2212.35:556:10
2312.25:556:10
2412.25:566:10
2512.25:566:10
2612.25:566:11
2712.25:576:11
2812.25:576:11
2912.25:576:11
3012.25:586:11
3112.25:586:11

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.03 kWh/m².

For context, solar energy here swings from a low near 4.77 kWh/m² to a high of 6.65 kWh/m² in October across the year — January's 5.03 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.1Bright
75.1Bright
85.1Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
204.9Bright
214.9Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
315.1Bright
Planning a trip in January

Hazard calendar for Teresina

In seasonPeak

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

Teresina's monsoon runs January–April, 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 Teresina?

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

2.7
Sightseeing
6th-best month of the year
4.5
Beach & pool
9th-best month of the year

January is a weaker month for outdoor sightseeing in Teresina.

What to pack for Teresina in January

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

In January, Teresina sees daytime highs around 32°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.

light clothesrain gearsun protection

UV index in Teresina 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 Teresina peaks around March 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 10 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 13UV 15Aug 10UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Teresina 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 Teresina is worst in October — around 35 µg/m³ PM2.5 (moderate), about 4.2× the cleanest month (June, 8 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateOct 1633 µg/m³Jun 199 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb16Moderate
Mar15Moderate
Apr14Moderate
May12Good
Jun8Good
Jul10Good
Aug16Moderate
Sep25Moderate
Oct35Moderate
Nov23Moderate
Dec17Moderate
Location & terrain

Where is Teresina?

Teresina sits at 5.1°S, 42.8°W, 87 m above sea level, in Brazil. The nearest listed city is Timon, 4.0 km away.

Topography around Teresina

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

Within 3 km, the terrain around Teresina has only modest variations in elevation — a maximum elevation change of 56 m around an average of 74 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 147 m; within 80 km, significant variations in elevation — a maximum elevation change of 382 m.

The land around Teresina is covered by artificial surfaces (76%) within 3 km, trees (43%) within 16 km, and trees (58%) and shrubs (20%) within 80 km.

3 km
56 m
16 km
147 m
80 km
382 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Timon 4.0 km · Demerval Lobão 33 km · Altos 38 km · José de Freitas 45 km · União 56 km · Matões 65 km · Caxias 67 km · Parnarama 73 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 Teresina (-5.0892°, -42.8019°, elevation 87 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).