Oiapoque weather in March

In March, Oiapoque sees average daytime highs of 29°C and overnight lows near 23°C, with 213 mm of rain across 23.6 wet days and about 12 hours of daylight. It is the 9th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 5% of the time in March, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of March to 12 hours by month's end. Set against the rest of the year, March is Oiapoque's 8th-clearest and 1st-windiest month. For the whole year in context, see Oiapoque's year-round climate.

Daytime high
29°
9th warmest
Overnight low
23°
10th coldest
Rainfall
213 mm
23.6 wet days
Daylight
12 hours
6:38 AM – 6:36 PM
Cloud cover
80%
8th clearest
Wind
9 km/h
1st windiest
Solar energy
4.28 kWh/m²
Travel score
3.5
out of 10

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical March day in Oiapoque reaches about 29°C in the afternoon and slips back to 23°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 31°C. Set against its neighbours, March runs on par with February and on par with April.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12923
22923
32923
42923
52923
62923
72923
82923
92923
102923
112923
122923
132923
142923
152923
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023
313023

How March really feels in Oiapoque

Once humidity and wind are folded in, March 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 March is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Oiapoque weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 23°28426.911.83.4
Feb29° / 23°26222.811.93.5
Mar29° / 23°21323.6123.5
Apr29° / 23°27125.112.13.2
May29° / 23°38129.112.22.9
Jun30° / 23°27627.312.23.0
Jul30° / 23°19025.112.23.4
Aug31° / 23°9415.612.14.0
Sep33° / 23°367.1124.1
Oct33° / 23°418.211.93.7
Nov32° / 23°10616.411.83.4
Dec30° / 23°2342611.83.2

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 13% of March, with mostly cloudy or overcast conditions the remaining 83%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11486
21585
31684
41684
51783
61783
71882
81882
91882
101882
111981
122080
132080
142080
151981
162080
172080
182080
192080
201981
211882
221882
231882
241882
251783
261684
271684
281684
291684
301684
311684

Chance of precipitation in March

Any precipitation

Oiapoque gets around 213 mm of rain over 23.6 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 76% and peaks near 82% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
182
281
381
480
579
678
777
876
976
1075
1174
1274
1373
1473
1573
1673
1773
1874
1974
2074
2175
2275
2376
2476
2577
2677
2778
2878
2978
3078
3178

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 90% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
13907
23907
33907
43907
53907
63916
74906
84906
94906
104915
114915
125905
135905
145914
155914
165914
175914
185914
194924
204915
214915
224915
234906
244906
253907
263907
273898
283889
2938710
3038710
3138611

Wind in March

Winds average 9 km/h in March, the windiest month of the year.

Across March, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 h 54 min at the start of March to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over March. Sunrise moves from 6:43 AM to 6:31 AM, and sunset from 6:38 PM to 6:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:436:38
211.96:436:38
311.96:426:38
411.96:426:38
511.96:426:38
611.96:416:38
711.96:416:38
811.96:416:37
911.96:406:37
1012.06:406:37
1112.06:406:37
1212.06:396:37
1312.06:396:37
1412.06:396:37
1512.06:386:36
1612.06:386:36
1712.06:376:36
1812.06:376:36
1912.06:376:36
2012.06:366:35
2112.06:366:35
2212.06:356:35
2312.06:356:35
2412.06:346:35
2512.06:346:34
2612.06:346:34
2712.06:336:34
2812.06:336:34
2912.06:326:34
3012.06:326:33
3112.06:316:33

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.28 kWh/m².

For context, solar energy here swings from a low near 3.68 kWh/m² to a high of 6 kWh/m² in September across the year — March's 4.28 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
13.9Moderate
24.0Moderate
34.0Bright
44.0Bright
54.1Bright
64.1Bright
74.1Bright
84.1Bright
94.2Bright
104.2Bright
114.2Bright
124.2Bright
134.2Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
314.3Bright
Planning a trip in March

Is March a good time to visit Oiapoque?

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

3.5
Sightseeing
4th-best month of the year
4.6
Beach & pool
6th-best month of the year

March is a weaker month for outdoor sightseeing in Oiapoque.

What to pack for Oiapoque in March

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

In March, Oiapoque sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. About 24 days see rain.

light clothesrain gear

Sea temperature near Oiapoque 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 October at about 29°C and coldest in February 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
Jan27Warm
Feb27Warm
Mar27Warm
Apr28Warm
May28Warm
Jun28Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Oiapoque in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Oiapoque peaks around April 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeApr 12UV 14Nov 23UV 11
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar14Extreme
Apr14Extreme
May13Extreme
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep12Extreme
Oct13Extreme
Nov11Extreme
Dec11Extreme

Air quality in Oiapoque 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 Oiapoque is worst in February — around 26 µg/m³ PM2.5 (moderate), about 3.9× the cleanest month (August, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateFeb 1925 µg/m³Aug 117 µg/m³
PM2.5 (µg/m³)Level
Jan22Moderate
Feb26Moderate
Mar25Moderate
Apr23Moderate
May15Moderate
Jun9Good
Jul7Good
Aug7Good
Sep8Good
Oct10Good
Nov11Good
Dec18Moderate
Location & terrain

Where is Oiapoque?

Oiapoque sits at 3.8°N, 51.8°W, 18 m above sea level, in Brazil. The nearest listed city is Matoury, 124 km away.

Saint-Laurent-du-MaroniPorto GrandeBlauwgrondRainville

Topography around Oiapoque

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

Within 3 km, the terrain around Oiapoque has only modest variations in elevation — a maximum elevation change of 97 m around an average of 28 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 124 m; within 80 km, significant variations in elevation — a maximum elevation change of 482 m.

The land around Oiapoque is covered by trees (72%) within 3 km, trees (93%) within 16 km, and trees (75%) within 80 km.

3 km
97 m
16 km
124 m
80 km
482 m
treesgrasslandartificial surfaceswaterwetlandmangroves
March weather nearby: Matoury 124 km · Rémire-Montjoly 129 km · Cayenne 134 km · Kourou 172 km · Saint-Laurent-du-Maroni 305 km · Porto Grande 351 km · Blauwgrond 426 km · Rainville 428 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 Oiapoque (3.8431°, -51.835°, elevation 18 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).