Jacareí weather in March

In March, Jacareí sees average daytime highs of 28°C and overnight lows near 19°C, with 139 mm of rain across 18.1 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 22% of the time in March, and the air most often feels muggy.

Daylight stretches from about 12 h 30 min at the start of March to 11 h 48 min by month's end. Set against the rest of the year, March is Jacareí's 7th-clearest and 11th-windiest month. For the whole year in context, see Jacareí's year-round climate.

Daytime high
28°
3rd warmest
Overnight low
19°
9th coldest
Rainfall
139 mm
18.1 wet days
Daylight
12 h 12 min
7:08 AM – 7:19 PM
Cloud cover
66%
7th clearest
Wind
6 km/h
11th windiest
Solar energy
4.82 kWh/m²
Travel score
5.2
out of 10

Jacareí is human settlement in Brazil.

Air quality
Good
PM10 24 µg/m³ · 2016

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

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical March day in Jacareí reaches about 28°C in the afternoon and slips back to 19°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 31°C. Set against its neighbours, March runs about 1°C cooler than February and about 1°C warmer than April.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12819
22819
32819
42819
52819
62819
72819
82819
92819
102819
112819
122819
132819
142819
152819
162819
172719
182719
192719
202719
212719
222719
232719
242719
252719
262718
272718
282718
292718
302718
312718

Jacareí weather by month

How March compares with the rest of the year at a glance. March is the 3rd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 20°22622.113.34.4
Feb28° / 20°17118.512.84.3
Mar28° / 19°13918.112.25.2
Apr26° / 17°579.511.56.7
May24° / 15°577.610.97.3
Jun23° / 13°385.110.67.8
Jul23° / 12°445.110.77.8
Aug24° / 13°355.211.27.9
Sep25° / 15°769.911.96.8
Oct26° / 17°10913.612.55.9
Nov27° / 18°14216.613.15.4
Dec28° / 19°17220.113.44.8

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 17% of March, with mostly cloudy or overcast conditions the remaining 60%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
23961
33961
43961
54060
64060
74060
83961
93961
104060
114159
124060
133961
143961
153961
163961
173862
183862
193763
203763
213961
223961
233961
243961
254060
264060
274060
284258
294357
304357
314456

Chance of precipitation in March

Any precipitation

Jacareí gets around 139 mm of rain over 18.1 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 58% and peaks near 62% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
162
262
362
462
562
662
762
862
961
1061
1161
1261
1361
1461
1560
1660
1760
1859
1958
2058
2157
2256
2355
2454
2553
2652
2751
2850
2948
3047
3146

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

Most of March feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, March lands in the muggy band about 72% of days. Sticky, muggy-or-worse air turns up on roughly 75% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1117766
2117766
3117766
4117766
5118756
6118765
7118765
8118765
9118765
10119755
11119764
12120754
13120754
14220744
15221743
16222733
17222733
18223732
19224722
20325702
21326692
22327691
23327691
24328681
25428671
26429661
27429661
28430651
29530641
30531631
31532621

Wind in March

Winds average 6 km/h in March.

Across March, daily wind ranges from about 6 km/h on the calmest days to 7 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
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in March

DaylightNight

Daylight runs from about 12 h 30 min at the start of March to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over March. Sunrise moves from 7:02 AM to 7:14 AM, and sunset from 7:32 PM to 7:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.57:027:32
212.57:027:31
312.57:037:31
412.47:037:30
512.47:047:29
612.47:047:28
712.47:057:27
812.47:057:26
912.37:067:25
1012.37:067:24
1112.37:067:23
1212.37:077:22
1312.27:077:21
1412.27:087:21
1512.27:087:20
1612.27:087:19
1712.17:097:18
1812.17:097:17
1912.17:107:16
2012.17:107:15
2112.17:107:14
2212.07:117:13
2312.07:117:12
2412.07:127:11
2512.07:127:10
2611.97:127:09
2711.97:137:08
2811.97:137:06
2911.97:137:05
3011.87:147:04
3111.87:147:03

Solar energy in March

Daily solar energy (kWh/m²)

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

For context, solar energy here swings from a low near 3.39 kWh/m² to a high of 5.52 kWh/m² in December across the year — March's 4.82 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
124.9Bright
134.9Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.7Bright
194.7Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.6Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in March

Hazard calendar for Jacareí

In seasonPeak

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

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

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

Is March a good time to visit Jacareí?

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

5.2
Sightseeing
9th-best month of the year
5.5
Beach & pool
8th-best month of the year

March is a reasonable time to visit Jacareí for sightseeing.

What to pack for Jacareí in March

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

In March, Jacareí sees daytime highs around 28°C and nights near 19°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

Sea temperature near Jacareí in March

The nearest coast averages about 27°C in March — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 64 km away) is warmest in February at about 27°C and coldest in August near 21°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°25°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr26Warm
May24Refreshing
Jun22Refreshing
Jul21Refreshing
Aug21Refreshing
Sep21Refreshing
Oct22Refreshing
Nov23Refreshing
Dec25Warm

UV index in Jacareí in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Jacareí peaks around February 8 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 8UV 15Jul 11UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Jacareí in March

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Jacareí is worst in June — around 32 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 16 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 2132 µg/m³Nov 2316 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb17Moderate
Mar19Moderate
Apr21Moderate
May27Moderate
Jun32Moderate
Jul31Moderate
Aug28Moderate
Sep28Moderate
Oct20Moderate
Nov16Moderate
Dec16Moderate
Location & terrain

Where is Jacareí?

Jacareí sits at 23.3°S, 46.0°W, 574 m above sea level, in Brazil. The nearest listed city is Guararema, 14 km away.

Topography around Jacareí

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

Within 3 km, the terrain around Jacareí has only modest variations in elevation — a maximum elevation change of 129 m around an average of 589 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 295 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,071 m.

The land around Jacareí is covered by artificial surfaces (54%), trees (21%) and grassland (20%) within 3 km, grassland (44%) and trees (37%) within 16 km, and trees (52%) and grassland (26%) within 80 km.

3 km
129 m
16 km
295 m
80 km
2,071 m
treesgrasslandcroplandartificial surfaceswater
March weather nearby: Guararema 14 km · São José dos Campos 16 km · Santa Isabel 26 km · Salesópolis 28 km · Biritiba Mirim 31 km · Paraibuna 32 km · Mogi das Cruzes 33 km · Caçapava 35 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 Jacareí (-23.3053°, -45.9658°, elevation 574 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).