Santa Maria do Pará weather in September

In September, Santa Maria do Pará sees average daytime highs of 33°C and overnight lows near 23°C, with 27 mm of rain across 7.7 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 33°C through the month. The sky is clear or mostly clear about 37% 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 Santa Maria do Pará's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Santa Maria do Pará's year-round climate.

Daytime high
33°
3rd warmest
Overnight low
23°
8th coldest
Rainfall
27 mm
7.7 wet days
Daylight
12 hours
6:05 AM – 6:04 PM
Cloud cover
47%
2nd clearest
Wind
11 km/h
2nd windiest
Solar energy
5.88 kWh/m²
Travel score
4.0
out of 10

Santa Maria do Pará is settlement in Brazil.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 33°C through the month.

A typical September day in Santa Maria do Pará reaches about 33°C in the afternoon and slips back to 23°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 34°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13223
23223
33223
43223
53223
63223
73223
83223
93223
103223
113323
123323
133323
143323
153323
163323
173323
183323
193323
203323
213323
223323
233323
243323
253323
263323
273323
283323
293323
303323

How September really feels in Santa Maria do Pará

Once humidity and wind are folded in, September averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Santa Maria do Pará 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
Jan31° / 23°21325.912.12.8
Feb30° / 23°28426.6122.7
Mar30° / 23°37330.2122.6
Apr30° / 23°34829.5122.6
May31° / 23°24527.211.92.8
Jun31° / 23°11421.111.93.3
Jul31° / 23°851811.93.7
Aug32° / 23°4312.4124.0
Sep33° / 23°277.7124.0
Oct33° / 24°225.5123.9
Nov33° / 24°336.612.13.7
Dec32° / 24°8014.512.13.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 43% of September, with mostly cloudy or overcast conditions the remaining 19%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18317
28218
38218
48218
58218
68218
78218
88218
98218
108218
118218
128218
138119
148119
158119
168119
178020
188020
198020
208020
218020
228020
237921
247921
257921
267921
277921
287921
297921
307822

Chance of precipitation in September

Any precipitation

Santa Maria do Pará gets around 27 mm of rain over 7.7 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 26% and peaks near 32% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
132
232
331
430
530
629
729
829
928
1028
1128
1228
1328
1428
1527
1627
1727
1826
1926
2025
2124
2224
2323
2422
2522
2621
2721
2820
2919
3019

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 98% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
10991
21981
31981
41981
51981
61981
71981
82971
92971
102971
112971
122971
132971
142971
152971
162971
172971
182971
192971
201981
211981
221981
231981
241981
251990
261990
271990
281990
291990
301990

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

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 6:11 AM to 5:59 AM, and sunset from 6:09 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:116:09
212.06:106:09
312.06:106:09
412.06:106:08
512.06:096:08
612.06:096:08
712.06:086:07
812.06:086:07
912.06:086:07
1012.06:076:06
1112.06:076:06
1212.06:066:06
1312.06:066:05
1412.06:066:05
1512.06:056:05
1612.06:056:04
1712.06:046:04
1812.06:046:04
1912.06:046:03
2012.06:036:03
2112.06:036:03
2212.06:026:02
2312.06:026:02
2412.06:026:02
2512.06:016:01
2612.06:016:01
2712.06:006:01
2812.06:006:01
2912.06:006:00
3012.05:596:00

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.88 kWh/m².

For context, solar energy here swings from a low near 3.82 kWh/m² to a high of 6 kWh/m² in October across the year — September's 5.88 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
226.0Bright
236.0Bright
246.0Bright
256.0Bright
266.0Bright
276.0Intense
286.0Intense
296.0Intense
306.0Intense
Planning a trip in September

Hazard calendar for Santa Maria do Pará

In seasonPeak

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

Santa Maria do Pará'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 Santa Maria do Pará?

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

4.0
Sightseeing
1st-best month of the year
6.7
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Santa Maria do Pará for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Santa Maria do Pará in September

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

In September, Santa Maria do Pará sees daytime highs around 33°C and nights near 23°C. Pack light clothes. Worth having: sun protection. About 8 days see rain.

light clothessun protection

UV index in Santa Maria do Pará 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 Santa Maria do Pará 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
Nov10Extreme
Dec11Extreme

Air quality in Santa Maria do Pará 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 Santa Maria do Pará is worst in November — around 21 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (July, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 2020 µg/m³Jul 128 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar20Moderate
Apr15Moderate
May10Good
Jun8Good
Jul8Good
Aug9Good
Sep11Good
Oct13Moderate
Nov21Moderate
Dec19Moderate
Location & terrain

Where is Santa Maria do Pará?

Santa Maria do Pará sits at 1.4°S, 47.6°W, 51 m above sea level, in Brazil. The nearest listed city is Igarapé-Açu, 25 km away.

Topography around Santa Maria do Pará

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Santa Maria do Pará.

Within 3 km, the terrain around Santa Maria do Pará has only modest variations in elevation — a maximum elevation change of 49 m around an average of 36 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 71 m; within 80 km, only modest variations in elevation — a maximum elevation change of 135 m.

The land around Santa Maria do Pará is covered by grassland (49%) and trees (41%) within 3 km, trees (55%) and grassland (44%) within 16 km, and trees (66%) and grassland (28%) within 80 km.

3 km
49 m
16 km
71 m
80 km
135 m
treesgrasslandartificial surfaceswatermangroves
September weather nearby: Igarapé-Açu 25 km · São Miguel do Guamá 32 km · Castanhal 39 km · São Domingos do Capim 42 km · Capanema 47 km · Irituia 49 km · Bujaru 55 km · Ourém 56 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 Santa Maria do Pará (-1.3503°, -47.5756°, elevation 51 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. 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).