Guamaré weather in September

In September, Guamaré sees average daytime highs of 29°C and overnight lows near 24°C, with 1 mm of rain across 0.1 wet days and about 12 hours of daylight. It is the 9th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 80% 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 Guamaré's 1st-clearest and 1st-windiest month. For the whole year in context, see Guamaré's year-round climate.

Daytime high
29°
9th warmest
Overnight low
24°
3rd coldest
Rainfall
1 mm
0.1 wet days
Daylight
12 hours
5:20 AM – 5:19 PM
Cloud cover
25%
1st clearest
Wind
30 km/h
1st windiest
Solar energy
6.44 kWh/m²
Travel score
7.3
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical September day in Guamaré reaches about 29°C in the afternoon and slips back to 24°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°C. Set against its neighbours, September runs on par with August and on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12924
22924
32924
42924
52924
62924
72924
82924
92924
102924
112924
122924
132924
142924
152924
162924
172924
182924
192924
202924
212924
222924
232924
242924
252924
262924
272924
282924
292924
302924

How September really feels in Guamaré

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

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Guamaré weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 26°478.612.35.6
Feb29° / 26°6911.312.25.1
Mar29° / 26°11416.4124.7
Apr29° / 26°11816.511.94.6
May29° / 25°568.511.85.6
Jun29° / 25°416.311.76.2
Jul29° / 24°283.711.76.9
Aug29° / 24°20.511.87.3
Sep29° / 24°10.1127.3
Oct29° / 25°1012.17.2
Nov29° / 25°10.212.26.9
Dec29° / 26°61.812.36.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 80% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 6%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1937
2937
3937
4937
5937
6937
7937
8937
9937
10937
11946
12946
13946
14946
15946
16946
17946
18946
19946
20946
21946
22946
23946
24946
25946
26946
27946
28946
29955
30946

Chance of precipitation in September

Any precipitation

Guamaré gets around 1 mm of rain over 0.1 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 1% and peaks near 1% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
11
21
31
41
51
61
71
81
91
101
111
121
131
141
151
161
170
180
190
200
210
220
230
240
250
260
270
280
290
300

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 66% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
17426
27426
37426
47426
57426
67426
77426
87327
97327
107228
117129
127129
137030
146931
156832
166733
176634
186535
196436
206337
216238
226139
236040
245941
255842
265743
275644
285446
295347
305248

Wind in September

Winds average 30 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 29 km/h on the calmest days to 30 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202530
Wind speed (km/h)Feels
129windy
229windy
329windy
429windy
529windy
629windy
730windy
830windy
930windy
1030windy
1130windy
1230windy
1330windy
1430windy
1530windy
1630windy
1730windy
1830windy
1930windy
2030windy
2130windy
2230windy
2330windy
2430windy
2530windy
2630windy
2730windy
2830windy
2930windy
3030windy

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 5:28 AM to 5:13 AM, and sunset from 5:22 PM to 5:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:285:22
211.95:275:22
311.95:275:22
411.95:275:21
511.95:265:21
611.95:265:21
711.95:255:21
811.95:255:21
911.95:245:20
1011.95:245:20
1111.95:235:20
1212.05:225:20
1312.05:225:19
1412.05:215:19
1512.05:215:19
1612.05:205:19
1712.05:205:19
1812.05:195:18
1912.05:195:18
2012.05:185:18
2112.05:185:18
2212.05:175:17
2312.05:175:17
2412.05:165:17
2512.05:165:17
2612.05:155:17
2712.05:155:16
2812.05:145:16
2912.05:145:16
3012.05:135:16

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.44 kWh/m².

For context, solar energy here swings from a low near 4.78 kWh/m² to a high of 6.79 kWh/m² in October across the year — September's 6.44 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.2Intense
46.2Intense
56.2Intense
66.2Intense
76.2Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.3Intense
136.3Intense
146.4Intense
156.4Intense
166.4Intense
176.5Intense
186.5Intense
196.5Intense
206.5Intense
216.6Intense
226.6Intense
236.6Intense
246.6Intense
256.7Intense
266.7Intense
276.7Intense
286.7Intense
296.7Intense
306.7Intense
Planning a trip in September

Is September a good time to visit Guamaré?

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

7.3
Sightseeing
1st-best month of the year
9.3
Beach & pool
1st-best month of the year

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

What to pack for Guamaré in September

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

In September, Guamaré sees daytime highs around 29°C and nights near 24°C. Pack light clothes, sun protection and a windbreaker.

light clothessun protectiona windbreaker

Sea temperature near Guamaré in September

The nearest coast averages about 26°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 27 km away) is warmest in April at about 29°C and coldest in August near 26°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun28Warm
Jul27Warm
Aug26Warm
Sep26Warm
Oct27Warm
Nov27Warm
Dec28Warm

UV index in Guamaré 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 Guamaré peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 16UV 15Jul 13UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec11Extreme
Location & terrain

Where is Guamaré?

Guamaré sits at 5.1°S, 36.3°W, 5 m above sea level, in Brazil. The nearest listed city is Macau, 35 km away.

Topography around Guamaré

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

Within 3 km, the terrain around Guamaré has only modest variations in elevation — a maximum elevation change of 20 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 121 m; within 80 km, significant variations in elevation — a maximum elevation change of 545 m.

The land around Guamaré is covered by water (53%) within 3 km, water (48%) and shrubs (32%) within 16 km, and shrubs (47%) and water (34%) within 80 km.

3 km
20 m
16 km
121 m
80 km
545 m
shrubsgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
September weather nearby: Macau 35 km · João Câmara 73 km · Açu 83 km · Areia Branca 92 km · Touros 96 km · São Paulo do Potengi 107 km · Lagoa Nova 111 km · Mossoró 114 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 Guamaré (-5.1075°, -36.3203°, elevation 5 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).