Ilha Grande weather in March

In March, Ilha Grande sees average daytime highs of 28°C and overnight lows near 25°C, with 323 mm of rain across 28.3 wet days and about 12 hours of daylight. It is the 12th-warmest and 2nd-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 11% of the time in March, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of March to 12 hours by month's end. Set against the rest of the year, March is Ilha Grande's 11th-clearest and 11th-windiest month. For the whole year in context, see Ilha Grande's year-round climate.

Daytime high
28°
12th warmest
Overnight low
25°
1st coldest
Rainfall
323 mm
28.3 wet days
Daylight
12 hours
5:56 AM – 5:58 PM
Cloud cover
76%
11th clearest
Wind
18 km/h
11th windiest
Solar energy
5.29 kWh/m²
Travel score
3.7
out of 10

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 Ilha Grande reaches about 28°C in the afternoon and slips back to 25°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°C. Set against its neighbours, March runs on par with February and on par with April.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12826
22826
32826
42826
52826
62826
72826
82826
92826
102826
112826
122825
132825
142825
152825
162825
172825
182825
192825
202825
212825
222825
232825
242825
252825
262825
272825
282825
292825
302825
312825

How March really feels in Ilha Grande

Once humidity and wind are folded in, March averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

March sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Ilha Grande weather by month

How March compares with the rest of the year at a glance. March is the 12th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 26°14621.312.14.3
Feb28° / 26°21123.712.13.9
Mar28° / 25°32328.3123.7
Apr28° / 26°34327.311.93.5
May29° / 26°17820.711.94.3
Jun29° / 26°5111.311.85.5
Jul29° / 26°224.311.96.5
Aug30° / 26°20.411.97.0
Sep29° / 26°10.2127.2
Oct29° / 26°60.812.17.1
Nov29° / 26°71.612.16.8
Dec29° / 26°347.712.25.9

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 14% of March, with mostly cloudy or overcast conditions the remaining 76%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12971
22971
32971
42773
52773
62773
72674
82575
92575
102575
112575
122674
132674
142674
152674
162575
172674
182575
192575
202476
212476
222476
232278
242278
252278
262080
271981
281981
291981
301981
311981

Chance of precipitation in March

Any precipitation

Ilha Grande gets around 323 mm of rain over 28.3 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 91% and peaks near 96% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
186
287
387
487
588
688
788
889
989
1089
1189
1289
1389
1490
1590
1690
1791
1891
1992
2092
2193
2293
2394
2494
2595
2695
2796
2896
2996
3096
3196

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 66% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
16832
26832
36832
46832
56832
66733
76733
86733
96634
106634
116634
126634
136634
146634
156634
166634
176634
186634
196634
206634
216634
226634
236535
246535
256436
266436
276337
286337
296238
306238
316139

Wind in March

Winds average 18 km/h in March.

Across March, daily wind ranges from about 17 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
719light breeze
819light breeze
919light breeze
1019light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 12 h 06 min at the start of March to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over March. Sunrise moves from 5:59 AM to 5:53 AM, and sunset from 6:02 PM to 5:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:596:02
212.15:596:02
312.15:596:02
412.15:586:01
512.05:586:01
612.05:586:01
712.05:586:01
812.05:586:00
912.05:586:00
1012.05:576:00
1112.05:575:59
1212.05:575:59
1312.05:575:59
1412.05:575:58
1512.05:575:58
1612.05:565:58
1712.05:565:57
1812.05:565:57
1912.05:565:56
2012.05:555:56
2112.05:555:56
2212.05:555:55
2312.05:555:55
2412.05:555:54
2512.05:545:54
2612.05:545:54
2712.05:545:53
2812.05:545:53
2912.05:535:52
3012.05:535:52
3112.05:535:52

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 5.29 kWh/m².

For context, solar energy here swings from a low near 4.98 kWh/m² to a high of 7.04 kWh/m² in October across the year — March's 5.29 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in March

Hazard calendar for Ilha Grande

In seasonPeak

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

Ilha Grande's monsoon runs February–May, when most of the year's rain falls.

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

Is March a good time to visit Ilha Grande?

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

3.7
Sightseeing
11th-best month of the year
3.9
Beach & pool
12th-best month of the year

March is a weaker month for outdoor sightseeing in Ilha Grande.

What to pack for Ilha Grande in March

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

In March, Ilha Grande sees daytime highs around 28°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.

light clothesrain gearsun protection

Sea temperature near Ilha Grande in March

The nearest coast averages about 29°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 21 km away) is warmest in May at about 29°C and coldest in September near 27°C.

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

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb28Tropical
Mar29Tropical
Apr29Tropical
May29Tropical
Jun29Tropical
Jul28Warm
Aug27Warm
Sep27Warm
Oct27Warm
Nov28Warm
Dec28Tropical

UV index in Ilha Grande in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 16 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ilha Grande peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 14 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 15Jul 14UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar16Extreme
Apr14Extreme
May12Extreme
Jun10Extreme
Jul10Extreme
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Ilha Grande 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 Ilha Grande is worst in December — around 18 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (August, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateDec 1217 µg/m³Aug 216 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb15Moderate
Mar13Moderate
Apr11Good
May8Good
Jun7Good
Jul9Good
Aug6Good
Sep7Good
Oct10Good
Nov16Moderate
Dec18Moderate
Location & terrain

Where is Ilha Grande?

Ilha Grande sits at 2.9°S, 41.8°W, 0 m above sea level, in Brazil. The nearest listed city is Parnaíba, 7.0 km away.

Topography around Ilha Grande

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

Within 3 km, the terrain around Ilha Grande has only modest variations in elevation — a maximum elevation change of 24 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 45 m; within 80 km, large variations in elevation — a maximum elevation change of 656 m.

The land around Ilha Grande is covered by grassland (49%) and trees (22%) within 3 km, grassland (32%) within 16 km, and trees (38%) and water (35%) within 80 km.

3 km
24 m
16 km
45 m
80 km
656 m
treesshrubsgrasslandartificial surfacesbare terrainwaterwetlandmangroves
March weather nearby: Parnaíba 7.0 km · Araioses 10 km · Luís Correia 17 km · Buriti dos Lopes 36 km · Tutóia 52 km · Cocal 75 km · Paulino Neves 81 km · São Bernardo 88 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 Ilha Grande (-2.8521°, -41.8169°, elevation 0 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).