Macapá weather in May

In May, Macapá sees average daytime highs of 30°C and overnight lows near 24°C, with 357 mm of rain across 29.6 wet days and about 12 hours of daylight. It is the 8th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 9% of the time in May, and the air most often feels miserable.

Daylight stretches from about 12 hours at the start of May to 12 hours by month's end. Set against the rest of the year, May is Macapá's 8th-clearest and 12th-windiest month. For the whole year in context, see Macapá's year-round climate.

Daytime high
30°
8th warmest
Overnight low
24°
7th coldest
Rainfall
357 mm
29.6 wet days
Daylight
12 hours
6:20 AM – 6:21 PM
Cloud cover
76%
8th clearest
Wind
9 km/h
12th windiest
Solar energy
4 kWh/m²
Travel score
2.9
out of 10

Macapá is municipality of Amapá state, Brazil.

Density
80/km²
people per km²
Founded
1758

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical May day in Macapá reaches about 30°C in the afternoon and slips back to 24°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°C. Set against its neighbours, May runs on par with April and on par with June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12924
22924
32924
42924
52924
62924
72924
82924
92924
102924
112924
122924
132924
142924
153024
163024
173024
183024
193024
203024
213024
223024
233024
243024
253024
263024
273024
283024
293024
303024
313024

How May really feels in Macapá

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

Macapá weather by month

How May compares with the rest of the year at a glance. May is the 8th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°27429.2123.0
Feb29° / 24°32226.7123.0
Mar29° / 24°38729.2123.0
Apr29° / 24°38429.2122.9
May30° / 24°35729.6122.9
Jun30° / 24°20527.3123.0
Jul30° / 24°15525.8123.3
Aug31° / 25°7318123.8
Sep32° / 25°268.7124.4
Oct32° / 25°174.5124.5
Nov32° / 25°358.5124.1
Dec31° / 25°12822.8123.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 75%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11189
21288
31288
41387
51585
61684
71684
81783
91882
102080
112080
122179
132278
142377
152476
162575
172674
182773
192773
202872
212971
223070
233169
243268
253367
263565
273664
283763
293961
303961
314060

Chance of precipitation in May

Any precipitation

Macapá gets around 357 mm of rain over 29.6 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 95% and peaks near 98% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
198
298
398
498
597
697
797
897
997
1097
1197
1297
1396
1496
1596
1696
1796
1895
1995
2095
2195
2294
2394
2494
2593
2693
2793
2893
2992
3092
3192

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the miserable band about 73% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
13070
23070
32971
42971
52872
62773
72773
82674
92575
102575
112476
122476
132377
142377
152377
162377
172377
182476
192476
202476
212575
222674
232674
242773
252872
262971
273169
283268
293268
303367
313466

Wind in May

Winds average 9 km/h in May, the calmest month.

Across May, daily wind ranges from about 9 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
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

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

Days grow by about 0 minutes over May. Sunrise moves from 6:21 AM to 6:22 AM, and sunset from 6:22 PM to 6:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:216:22
212.06:216:21
312.06:216:21
412.06:216:21
512.06:216:21
612.06:216:21
712.06:216:21
812.06:216:21
912.06:216:21
1012.06:216:21
1112.06:216:21
1212.06:206:21
1312.06:206:21
1412.06:206:21
1512.06:206:21
1612.06:206:21
1712.06:206:21
1812.06:206:21
1912.06:216:21
2012.06:216:21
2112.06:216:21
2212.06:216:21
2312.06:216:21
2412.06:216:21
2512.06:216:21
2612.06:216:21
2712.06:216:21
2812.06:216:21
2912.06:216:21
3012.06:216:22
3112.06:226:22

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4 kWh/m².

For context, solar energy here swings from a low near 3.78 kWh/m² to a high of 6.3 kWh/m² in October across the year — May's 4 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.9Moderate
93.9Moderate
103.9Moderate
113.9Moderate
123.9Moderate
134.0Moderate
144.0Moderate
154.0Bright
164.0Bright
174.0Bright
184.1Bright
194.1Bright
204.1Bright
214.1Bright
224.1Bright
234.2Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.3Bright
294.3Bright
304.3Bright
314.3Bright
Planning a trip in May

Hazard calendar for Macapá

In seasonPeak

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

Macapá's monsoon runs January–June, when most of the year's rain falls.

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

Is May a good time to visit Macapá?

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

2.9
Sightseeing
11th-best month of the year
3.8
Beach & pool
9th-best month of the year

May is a weaker month for outdoor sightseeing in Macapá.

What to pack for Macapá in May

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

In May, Macapá sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. About 30 days see rain.

light clothesrain gear

Sea temperature near Macapá in May

The nearest coast averages about 29°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 23 km away) is warmest in October at about 30°C and coldest in March near 28°C.

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

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb28Tropical
Mar28Tropical
Apr28Tropical
May29Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep30Tropical
Oct30Tropical
Nov30Tropical
Dec29Tropical

UV index in Macapá in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Macapá peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 10 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 14UV 15Aug 10UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul11Extreme
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Macapá in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Macapá is worst in February — around 21 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (July, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateFeb 2020 µg/m³Jul 177 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb21Moderate
Mar20Moderate
Apr17Moderate
May10Good
Jun8Good
Jul7Good
Aug7Good
Sep9Good
Oct13Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Macapá?

Macapá sits at 0.0°N, 51.1°W, 17 m above sea level, in Brazil. The nearest listed city is Santana, 15 km away.

Topography around Macapá

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

Within 3 km, the terrain around Macapá has only modest variations in elevation — a maximum elevation change of 27 m around an average of 10 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 42 m; within 80 km, only modest variations in elevation — a maximum elevation change of 132 m.

The land around Macapá is covered by artificial surfaces (52%) and grassland (22%) within 3 km, water (41%), trees (25%) and grassland (20%) within 16 km, and trees (60%) and water (22%) within 80 km.

3 km
27 m
16 km
42 m
80 km
132 m
treesgrasslandartificial surfacesbare terrainwaterwetland
May weather nearby: Santana 15 km · Mazagão 30 km · Afuá 79 km · Porto Grande 84 km · Chaves 122 km · Anajás 169 km · Gurupá 173 km · Laranjal do Jari 187 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 Macapá (0.0389°, -51.0664°, elevation 17 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).