Salinópolis weather in September

In September, Salinópolis sees average daytime highs of 28°C and overnight lows near 26°C, with 10 mm of rain across 3.1 wet days and about 12 hours of daylight. It is the 3rd-warmest and 11th-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 76% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of September to 12 hours by month's end. Set against the rest of the year, September is Salinópolis's 2nd-clearest and 1st-windiest month. For the whole year in context, see Salinópolis's year-round climate.

Daytime high
28°
3rd warmest
Overnight low
26°
11th coldest
Rainfall
10 mm
3.1 wet days
Daylight
12 hours
6:04 AM – 6:04 PM
Cloud cover
34%
2nd clearest
Wind
23 km/h
1st windiest
Solar energy
6.42 kWh/m²
Travel score
7.8
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical September day in Salinópolis reaches about 28°C in the afternoon and slips back to 26°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 28°C. Set against its neighbours, September runs on par with August and on par with October.

24°26°28°30°32°151015202530
Avg high (°C)Avg low (°C)
12826
22826
32826
42826
52826
62826
72826
82826
92826
102826
112826
122826
132826
142826
152826
162826
172826
182826
192826
202826
212826
222826
232826
242826
252826
262826
272826
282826
292826
302826

Salinópolis weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 25°33728.7123.7
Feb27° / 25°44927.3123.4
Mar27° / 25°55430.4123.4
Apr27° / 25°50129.4123.4
May28° / 26°37828.7123.7
Jun28° / 26°18225.1124.3
Jul28° / 26°11021125.2
Aug28° / 26°3010126.8
Sep28° / 26°103.1127.8
Oct28° / 26°92.8127.5
Nov28° / 26°215.5126.7
Dec28° / 26°11217.6125.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 76% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 9%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1928
2928
3928
4937
5937
6937
7937
8937
9937
10937
11937
12937
13937
14928
15928
16919
17919
189010
199010
209010
219010
229010
238911
248812
258812
268812
278812
288713
298713
308614

Chance of precipitation in September

Any precipitation

Salinópolis gets around 10 mm of rain over 3.1 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 11% and peaks near 16% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
116
216
316
415
515
615
714
814
913
1013
1113
1212
1312
1411
1511
1610
179
189
198
208
218
227
237
247
257
267
277
287
297
307

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 96% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
1955
2964
3964
4964
5964
6964
7955
8955
9955
10955
11955
12955
13964
14964
15964
16964
17964
18964
19964
20973
21973
22973
23973
24973
25973
26973
27973
28964
29964
30964

Wind in September

Winds average 23 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 22 km/h on the calmest days to 23 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
122breezy
223breezy
323breezy
423breezy
523breezy
623breezy
723breezy
823breezy
923breezy
1023breezy
1123breezy
1223breezy
1323breezy
1423breezy
1523breezy
1623breezy
1723breezy
1823breezy
1923breezy
2023breezy
2123breezy
2222breezy
2322breezy
2422breezy
2522breezy
2622breezy
2722breezy
2822breezy
2922breezy
3022breezy

Sunrise & sunset in September

DaylightNight

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

Days grow by about 0 minutes over September. Sunrise moves from 6:09 AM to 5:59 AM, and sunset from 6:09 PM to 5:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:096:09
212.06:096:08
312.06:096:08
412.06:086:08
512.06:086:07
612.06:086:07
712.06:076:07
812.06:076:06
912.06:076:06
1012.06:066:06
1112.06:066:05
1212.06:056:05
1312.06:056:05
1412.06:056:04
1512.06:046:04
1612.06:046:04
1712.06:036:03
1812.06:036:03
1912.06:036:03
2012.06:026:02
2112.06:026:02
2212.06:026:02
2312.06:016:01
2412.06:016:01
2512.06:006:00
2612.06:006:00
2712.06:006:00
2812.05:596:00
2912.05:595:59
3012.05:595:59

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.42 kWh/m².

For context, solar energy here swings from a low near 4.36 kWh/m² to a high of 6.52 kWh/m² in October across the year — September's 6.42 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.3Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.4Intense
146.4Intense
156.4Intense
166.4Intense
176.4Intense
186.4Intense
196.5Intense
206.5Intense
216.5Intense
226.5Intense
236.5Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
Planning a trip in September

Hazard calendar for Salinópolis

In seasonPeak

None of Salinópolis's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Salinópolis's monsoon runs January–May, when most of the year's rain falls.

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

Is September a good time to visit Salinópolis?

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

7.8
Sightseeing
1st-best month of the year
8.3
Beach & pool
1st-best month of the year

September is one of the better times to visit Salinópolis for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Salinópolis in September

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

In September, Salinópolis sees daytime highs around 28°C and nights near 26°C. Pack light clothes and sun protection. Worth having: a windbreaker. About 3 days see rain.

light clothessun protectiona windbreaker

Sea temperature near Salinópolis in September

The nearest coast averages about 28°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in June at about 29°C and coldest in February near 28°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
Mar28Tropical
Apr28Tropical
May29Tropical
Jun29Tropical
Jul28Tropical
Aug28Tropical
Sep28Tropical
Oct28Tropical
Nov28Tropical
Dec28Tropical

UV index in Salinópolis in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Salinópolis peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 18 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 16UV 15Jul 18UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul10Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Salinópolis in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Salinópolis is worst in February — around 22 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (July, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateFeb 2022 µg/m³Jul 127 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb22Moderate
Mar21Moderate
Apr16Moderate
May9Good
Jun7Good
Jul7Good
Aug8Good
Sep10Good
Oct11Good
Nov13Moderate
Dec15Moderate
Location & terrain

Where is Salinópolis?

Salinópolis sits at 0.6°S, 47.4°W, 1 m above sea level, in Brazil. The nearest listed city is Maracanã, 20 km away.

Topography around Salinópolis

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

Within 3 km, the terrain around Salinópolis has only modest variations in elevation — a maximum elevation change of 28 m around an average of 7 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 51 m; within 80 km, only modest variations in elevation — a maximum elevation change of 85 m.

The land around Salinópolis is covered by water (37%) and mangroves (31%) within 3 km, water (54%) and trees (21%) within 16 km, and water (43%) and trees (34%) within 80 km.

3 km
28 m
16 km
51 m
80 km
85 m
treesgrasslandartificial surfacesbare terrainwaterwetlandmangroves
September weather nearby: Maracanã 20 km · São João de Pirabas 26 km · Marapanim 40 km · Curuçá 56 km · Igarapé-Açu 64 km · Capanema 67 km · Tracuateua 71 km · São Caetano de Odivelas 75 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 Salinópolis (-0.621°, -47.3542°, elevation 1 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).