Lucas weather in September

In September, Lucas sees average daytime highs of 34°C and overnight lows near 23°C, with 49 mm of rain across 6.2 wet days and about 11.9 hours of daylight. It is the 1st-warmest and 8th-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 57% of the time in September, and the air most often feels muggy.

Daylight stretches from about 11 h 42 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Lucas's 4th-clearest and 2nd-windiest month. For the whole year in context, see Lucas's year-round climate.

Daytime high
34°
1st warmest
Overnight low
23°
5th coldest
Rainfall
49 mm
6.2 wet days
Daylight
11 h 54 min
6:41 AM – 6:35 PM
Cloud cover
41%
4th clearest
Wind
8 km/h
2nd windiest
Solar energy
5.72 kWh/m²
Travel score
3.2
out of 10

Lucas is human 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 34°C through the month.

A typical September day in Lucas reaches about 34°C in the afternoon and slips back to 23°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 38°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13422
23422
33422
43422
53422
63422
73422
83422
93522
103523
113523
123523
133523
143523
153523
163523
173523
183523
193523
203523
213423
223423
233424
243424
253424
263424
273424
283424
293424
303424

How September really feels in Lucas

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.

Lucas weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 24°26224.212.92.7
Feb32° / 24°2112212.52.7
Mar32° / 24°18123.112.12.8
Apr32° / 23°8412.511.63.8
May31° / 21°395.311.25.3
Jun31° / 20°141.7115.9
Jul31° / 19°80.911.15.9
Aug33° / 20°111.711.54.3
Sep34° / 23°496.211.93.2
Oct34° / 24°11814.612.42.7
Nov33° / 24°17419.412.82.8
Dec32° / 24°22223.1132.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 29%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18416
28317
38218
48119
58020
68020
77921
87822
97723
107723
117624
127426
137426
147327
157327
167228
177129
187129
196931
206832
216832
226634
236535
246337
256238
266139
276040
285941
295842
305743

Chance of precipitation in September

Any precipitation

Lucas gets around 49 mm of rain over 6.2 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 21% and peaks near 33% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
111
212
312
413
513
614
714
815
916
1016
1117
1218
1318
1419
1520
1621
1721
1822
1923
2024
2125
2226
2327
2428
2529
2630
2731
2832
2933
3033

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 34% of days. Sticky, muggy-or-worse air turns up on roughly 65% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
19173133110
29163033110
39162934120
49162834130
58162734140
68162634150
78152634160
88152534171
97152434191
107142335201
117132335211
126132235231
136122136242
146112036252
155101937272
165101837282
17591837302
18481737322
19481637332
20471536352
21371536372
22361435392
23361334422
24361234442
25251232472
26251131492
27241130512
28241029532
29241028542
30131026582

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 42 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over September. Sunrise moves from 6:53 AM to 6:29 AM, and sunset from 6:34 PM to 6:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:536:34
211.76:526:34
311.76:526:34
411.76:516:34
511.76:506:34
611.86:496:34
711.86:486:34
811.86:476:35
911.86:476:35
1011.86:466:35
1111.86:456:35
1211.86:446:35
1311.96:436:35
1411.96:426:35
1511.96:426:35
1611.96:416:35
1711.96:406:35
1811.96:396:36
1912.06:386:36
2012.06:376:36
2112.06:376:36
2212.06:366:36
2312.06:356:36
2412.06:346:36
2512.16:336:36
2612.16:326:36
2712.16:326:37
2812.16:316:37
2912.16:306:37
3012.16:296:37

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.72 kWh/m².

For context, solar energy here swings from a low near 4.3 kWh/m² to a high of 5.97 kWh/m² in October across the year — September's 5.72 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.6Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.9Bright
305.9Bright
Planning a trip in September

Hazard calendar for Lucas

In seasonPeak

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

Lucas's monsoon runs October–March, 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 Lucas?

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

3.2
Sightseeing
6th-best month of the year
6.5
Beach & pool
5th-best month of the year

September is a weaker month for outdoor sightseeing in Lucas. The water and warmth also suit a beach or pool day.

What to pack for Lucas in September

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

In September, Lucas sees daytime highs around 34°C and nights near 23°C. Pack light clothes. Worth having: sun protection. About 6 days see rain.

light clothessun protection

UV index in Lucas in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Lucas peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 15 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeJan 21UV 15Sep 15UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr11Extreme
May8Very high
Jun7Very high
Jul8Very high
Aug9Very high
Sep6High
Oct10Extreme
Nov13Extreme
Dec14Extreme

Air quality in Lucas 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 Lucas is worst in September — around 107 µg/m³ PM2.5 (unhealthy), about 16.5× the cleanest month (June, 7 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecGoodUnhealthyModerateGoodSep 14101 µg/m³Jun 197 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar9Good
Apr8Good
May7Good
Jun7Good
Jul7Good
Aug68Unhealthy
Sep107Unhealthy
Oct30Moderate
Nov14Moderate
Dec11Good
Location & terrain

Where is Lucas?

Lucas sits at 16.3°S, 55.9°W, 134 m above sea level, in Brazil. The nearest listed city is Santo Antônio do Leverger, 54 km away.

Topography around Lucas

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

Within 3 km, the terrain around Lucas has only modest variations in elevation — a maximum elevation change of 22 m around an average of 130 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 211 m; within 80 km, large variations in elevation — a maximum elevation change of 795 m.

The land around Lucas is covered by wetland (40%) and trees (38%) within 3 km, wetland (50%) and trees (38%) within 16 km, and trees (53%) and grassland (26%) within 80 km.

3 km
22 m
16 km
211 m
80 km
795 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Santo Antônio do Leverger 54 km · Poconé 74 km · Várzea Grande 79 km · Cuiabá 84 km · Chapada dos Guimarães 99 km · Jaciara 111 km · Campo Verde 120 km · Rondonópolis 139 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 Lucas (-16.3333°, -55.9333°, elevation 134 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).