Oiapoque weather in July

In July, Oiapoque sees average daytime highs of 30°C and overnight lows near 23°C, with 190 mm of rain across 25.1 wet days and about 12.2 hours of daylight. It is the 5th-warmest and 8th-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 22% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 12 h 12 min at the start of July to 12 h 12 min by month's end. Set against the rest of the year, July is Oiapoque's 4th-clearest and 11th-windiest month. For the whole year in context, see Oiapoque's year-round climate.

Daytime high
30°
5th warmest
Overnight low
23°
2nd coldest
Rainfall
190 mm
25.1 wet days
Daylight
12 h 12 min
6:27 AM – 6:39 PM
Cloud cover
60%
4th clearest
Wind
6 km/h
11th windiest
Solar energy
4.62 kWh/m²
Travel score
3.4
out of 10

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

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

A typical July day in Oiapoque reaches about 30°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, July runs on par with June and about 1°C cooler than August.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153022
163022
173022
183022
193022
203022
213022
223022
233022
243022
253022
263022
273022
283022
293022
303022
313123

How July really feels in Oiapoque

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

Oiapoque weather by month

How July compares with the rest of the year at a glance. July is the 5th-warmest and 8th-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 July

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 29% of July, with mostly cloudy or overcast conditions the remaining 50%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23961
33961
44060
54060
64159
74258
84357
94456
104555
114654
124753
134852
144951
155050
165149
175248
185248
195446
205545
215545
225644
235743
245743
255842
265941
276040
286040
296040
306139
316238

Chance of precipitation in July

Any precipitation

Oiapoque gets around 190 mm of rain over 25.1 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 80% and peaks near 86% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
186
286
386
486
585
685
785
885
985
1084
1184
1284
1383
1483
1582
1682
1781
1880
1980
2079
2178
2277
2377
2476
2575
2674
2773
2872
2970
3069
3168

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 95% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
1955
2955
3955
4955
5955
6955
7955
8955
9955
10955
11955
12946
13946
14946
15946
16946
17946
18946
19955
20955
21955
22955
23955
24955
25955
26964
27964
28964
29964
30964
31964

Wind in July

Winds average 6 km/h in July.

Across July, daily wind ranges from about 6 km/h on the calmest days to 6 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
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in July

DaylightNight

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

Days grow by about 0 minutes over July. Sunrise moves from 6:24 AM to 6:28 AM, and sunset from 6:37 PM to 6:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:246:37
212.26:246:37
312.26:246:38
412.26:256:38
512.26:256:38
612.26:256:38
712.26:256:38
812.26:256:38
912.26:266:38
1012.26:266:39
1112.26:266:39
1212.26:266:39
1312.26:266:39
1412.26:276:39
1512.26:276:39
1612.26:276:39
1712.26:276:39
1812.26:276:39
1912.26:276:39
2012.26:276:39
2112.26:286:39
2212.26:286:39
2312.26:286:39
2412.26:286:39
2512.26:286:39
2612.26:286:39
2712.26:286:39
2812.26:286:39
2912.26:286:39
3012.26:286:39
3112.26:286:39

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.62 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 — July's 4.62 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.4Bright
54.4Bright
64.4Bright
74.4Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.6Bright
154.6Bright
164.6Bright
174.6Bright
184.7Bright
194.7Bright
204.7Bright
214.7Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
315.0Bright
Planning a trip in July

Is July a good time to visit Oiapoque?

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

3.4
Sightseeing
6th-best month of the year
4.6
Beach & pool
5th-best month of the year

July is a weaker month for outdoor sightseeing in Oiapoque.

What to pack for Oiapoque in July

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

In July, Oiapoque sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.

light clothesrain gearsun protection

Sea temperature near Oiapoque in July

The nearest coast averages about 29°C in July — 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 July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 11 (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 July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July 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
July 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).