Meruoca weather in September

In September, Meruoca sees average daytime highs of 34°C and overnight lows near 23°C, with 4 mm of rain across 1.3 wet days and about 12 hours of daylight. It is the 3rd-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 34°C through the month. The sky is clear or mostly clear about 69% of the time in September, and the air most often feels muggy.

Daylight stretches from about 11 h 54 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Meruoca's 1st-clearest and 2nd-windiest month. For the whole year in context, see Meruoca's year-round climate.

Daytime high
34°
3rd warmest
Overnight low
23°
8th coldest
Rainfall
4 mm
1.3 wet days
Daylight
12 hours
5:37 AM – 5:36 PM
Cloud cover
32%
1st clearest
Wind
13 km/h
2nd windiest
Solar energy
6.77 kWh/m²
Travel score
4.0
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 34°C through the month.

A typical September day in Meruoca reaches about 34°C in the afternoon and slips back to 23°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 33°C and 35°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13322
23323
33323
43323
53323
63323
73323
83323
93323
103423
113423
123423
133423
143423
153423
163423
173423
183423
193423
203423
213423
223423
233423
243423
253423
263423
273423
283423
293423
303423

How September really feels in Meruoca

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.

Meruoca weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°20521.712.23.1
Feb30° / 23°25523.912.13.0
Mar30° / 23°37228.5122.9
Apr30° / 23°37026.811.93.0
May30° / 22°17420.911.83.7
Jun30° / 22°611211.84.7
Jul31° / 22°326.711.85.0
Aug33° / 22°122.611.94.6
Sep34° / 23°41.3124.0
Oct34° / 23°8212.13.6
Nov34° / 24°123.212.23.5
Dec33° / 24°5810.512.23.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 69% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 23% of September, with mostly cloudy or overcast conditions the remaining 9%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1919
2919
3919
4919
59010
69010
79010
89010
99010
109010
119010
12919
13919
14919
15919
16928
17928
18928
19928
20928
21928
22928
23928
24928
25928
26928
27919
28919
29919
309010

Chance of precipitation in September

Any precipitation

Meruoca gets around 4 mm of rain over 1.3 wet days in September, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 5% and peaks near 6% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
16
26
35
45
55
65
75
85
95
105
115
124
134
144
154
164
174
184
194
204
214
224
234
244
254
264
275
285
295
305

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 71% of days. Sticky, muggy-or-worse air turns up on roughly 72% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
128711
229701
330691
430691
531681
632680
733670
833670
933670
1033661
1133661
1232671
1332671
1431681
1530691
1630691
1729701
1828711
1927721
2026731
2126731
2225741
2325741
2424751
2524760
2624760
2724760
2823770
2923770
3023770

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 min 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 6 minutes over September. Sunrise moves from 5:44 AM to 5:30 AM, and sunset from 5:39 PM to 5:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:445:39
211.95:435:39
311.95:435:39
411.95:425:39
511.95:425:39
611.95:415:38
712.05:415:38
812.05:405:38
912.05:405:37
1012.05:405:37
1112.05:395:37
1212.05:395:37
1312.05:385:36
1412.05:385:36
1512.05:375:36
1612.05:375:36
1712.05:365:35
1812.05:365:35
1912.05:355:35
2012.05:355:34
2112.05:345:34
2212.05:345:34
2312.05:335:34
2412.05:335:33
2512.05:335:33
2612.05:325:33
2712.05:325:33
2812.05:315:32
2912.05:315:32
3012.05:305:32

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.77 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.72 kWh/m² to a high of 6.77 kWh/m² in September across the year — September's 6.77 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.6Intense
56.6Intense
66.7Intense
76.7Intense
86.7Intense
96.7Intense
106.7Intense
116.7Intense
126.7Intense
136.7Intense
146.8Intense
156.8Intense
166.8Intense
176.8Intense
186.8Intense
196.8Intense
206.8Intense
216.8Intense
226.8Intense
236.8Intense
246.8Intense
256.8Intense
266.8Intense
276.8Intense
286.8Intense
296.8Intense
306.8Intense
Planning a trip in September

Hazard calendar for Meruoca

In seasonPeak

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

Meruoca'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 Meruoca?

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

4.0
Sightseeing
4th-best month of the year
7.7
Beach & pool
2nd-best month of the year

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

What to pack for Meruoca in September

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

In September, Meruoca sees daytime highs around 34°C and nights near 23°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Meruoca 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 Meruoca peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 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 15Jun 22UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec11Extreme

Air quality in Meruoca 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 Meruoca is worst in December — around 17 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (July, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateDec 1017 µg/m³Jul 216 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb13Moderate
Mar12Moderate
Apr12Good
May10Good
Jun7Good
Jul6Good
Aug6Good
Sep7Good
Oct10Good
Nov17Moderate
Dec17Moderate
Location & terrain

Where is Meruoca?

Meruoca sits at 3.5°S, 40.5°W, 668 m above sea level, in Brazil. The nearest listed city is Massapê, 13 km away.

Topography around Meruoca

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

Within 3 km, the terrain around Meruoca has significant variations in elevation — a maximum elevation change of 521 m around an average of 729 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 956 m; within 80 km, large variations in elevation — a maximum elevation change of 1,010 m.

The land around Meruoca is covered by trees (96%) within 3 km, trees (54%) and shrubs (33%) within 16 km, and shrubs (49%), trees (27%) and grassland (22%) within 80 km.

3 km
521 m
16 km
956 m
80 km
1,010 m
treesshrubsgrasslandartificial surfaceswater
September weather nearby: Massapê 13 km · Sobral 20 km · Coreaú 22 km · Santana do Acaraú 28 km · Forquilha 36 km · Cariré 46 km · Frecheirinha 47 km · Morrinhos 50 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 Meruoca (-3.5417°, -40.455°, elevation 668 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).