Itanhaém weather in March

In March, Itanhaém sees average daytime highs of 26°C and overnight lows near 23°C, with 212 mm of rain across 21.7 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 25% of the time in March, and the air most often feels oppressive.

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 Itanhaém's 6th-clearest and 9th-windiest month. For the whole year in context, see Itanhaém's year-round climate.

Daytime high
26°
3rd warmest
Overnight low
23°
10th coldest
Rainfall
212 mm
21.7 wet days
Daylight
12 h 12 min
7:12 AM – 7:22 PM
Cloud cover
62%
6th clearest
Wind
11 km/h
9th windiest
Solar energy
4.89 kWh/m²
Travel score
5.0
out of 10

Itanhaém is human settlement in Brazil.

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 26°C through the month.

A typical March day in Itanhaém reaches about 26°C in the afternoon and slips back to 23°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 28°C. Set against its neighbours, March runs on par with February and about 1°C warmer than April.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12724
22724
32724
42724
52624
62624
72624
82624
92624
102624
112624
122624
132624
142624
152624
162624
172623
182623
192623
202623
212623
222623
232623
242623
252623
262623
272623
282623
292623
302623
312623

Itanhaém weather by month

How March compares with the rest of the year at a glance. March is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 24°22722.913.34.6
Feb27° / 24°21119.712.84.7
Mar26° / 23°21221.712.25.0
Apr25° / 22°13714.611.56.2
May23° / 20°12513.510.86.4
Jun22° / 18°10110.410.56.6
Jul21° / 17°10710.410.76.6
Aug21° / 18°8810.111.26.5
Sep21° / 19°14114.211.95.8
Oct23° / 20°15516.712.65.5
Nov24° / 21°1631713.25.6
Dec25° / 23°17419.213.55.2

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 22% of March, with mostly cloudy or overcast conditions the remaining 53%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24654
34654
44753
54753
64753
74852
84753
94753
104852
114852
124852
134852
144753
154753
164654
174654
184654
194753
204753
214753
224654
234753
244753
254753
264852
274852
284852
295050
305050
315149

Chance of precipitation in March

Any precipitation

Itanhaém gets around 212 mm of rain over 21.7 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 70% and peaks near 72% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
168
268
368
468
569
669
769
870
970
1070
1171
1271
1371
1471
1572
1672
1772
1872
1972
2072
2171
2271
2370
2470
2569
2669
2768
2867
2966
3065
3164

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the oppressive band about 61% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
102176417
202176417
302176417
402176417
502176417
602176516
702176516
802186416
902186515
1002186515
1102196514
1202206414
1302206513
1402216512
1502226412
1603236311
1703246211
1803256210
190426619
200427609
210428608
220529588
230530587
240530587
250631576
260631576
270732556
281732555
291732555
301832545
311832545

Wind in March

Winds average 11 km/h in March.

Across March, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

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 7:05 AM to 7:18 AM, and sunset from 7:36 PM to 7:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.57:057:36
212.57:057:35
312.57:067:35
412.57:067:34
512.47:077:33
612.47:077:32
712.47:077:31
812.47:087:30
912.37:087:29
1012.37:097:28
1112.37:097:27
1212.37:107:26
1312.27:107:25
1412.27:117:24
1512.27:117:23
1612.27:127:22
1712.27:127:21
1812.17:127:20
1912.17:137:19
2012.17:137:18
2112.17:147:17
2212.07:147:16
2312.07:157:15
2412.07:157:14
2512.07:157:13
2611.97:167:12
2711.97:167:11
2811.97:177:10
2911.97:177:09
3011.87:177:08
3111.87:187:07

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.89 kWh/m².

For context, solar energy here swings from a low near 3.03 kWh/m² to a high of 5.89 kWh/m² in December across the year — March's 4.89 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.1Bright
95.1Bright
105.1Bright
115.0Bright
125.0Bright
135.0Bright
144.9Bright
154.9Bright
164.9Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in March

Is March a good time to visit Itanhaém?

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

5.0
Sightseeing
10th-best month of the year
4.8
Beach & pool
4th-best month of the year

March is a reasonable time to visit Itanhaém for sightseeing.

What to pack for Itanhaém in March

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

In March, Itanhaém sees daytime highs around 26°C and nights near 23°C. Pack rain gear. Worth having: light clothes and sun protection. About 22 days see rain.

rain gearlight clothessun protection

Sea temperature near Itanhaém 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 18 km away) is warmest in February at about 27°C and coldest in August near 20°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
Aug20Refreshing
Sep21Refreshing
Oct22Refreshing
Nov23Refreshing
Dec25Warm

UV index in Itanhaém in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Itanhaém peaks around January 23 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 23UV 14Jul 12UV 5
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar9Very high
Apr8Very high
May7High
Jun6High
Jul5Moderate
Aug7High
Sep7Very high
Oct10Extreme
Nov13Extreme
Dec13Extreme

Air quality in Itanhaém 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 Itanhaém is worst in July — around 52 µg/m³ PM2.5 (poor), about 2.1× the cleanest month (February, 24 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateJul 1451 µg/m³Feb 1225 µg/m³
PM2.5 (µg/m³)Level
Jan25Moderate
Feb24Moderate
Mar26Moderate
Apr28Moderate
May36Poor
Jun49Poor
Jul52Poor
Aug47Poor
Sep41Poor
Oct31Moderate
Nov25Moderate
Dec26Moderate
Location & terrain

Where is Itanhaém?

Itanhaém sits at 24.2°S, 46.8°W, 12 m above sea level, in Brazil. The nearest listed city is Mongaguá, 20 km away.

Topography around Itanhaém

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

Within 3 km, the terrain around Itanhaém has only modest variations in elevation — a maximum elevation change of 70 m around an average of 3 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 700 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,389 m.

The land around Itanhaém is covered by water (43%) and artificial surfaces (29%) within 3 km, water (48%) and trees (44%) within 16 km, and trees (47%) and water (41%) within 80 km.

3 km
70 m
16 km
700 m
80 km
1,389 m
treesgrasslandartificial surfacesbare terrainwaterwetlandmangroves
March weather nearby: Mongaguá 20 km · Peruíbe 26 km · Embu-Guaçu 39 km · Juquitiba 40 km · São Lourenço da Serra 40 km · Parelheiros 40 km · Itariri 41 km · Praia Grande 44 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 Itanhaém (-24.1831°, -46.7889°, elevation 12 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).