Rio Formoso weather in October

In October, Rio Formoso sees average daytime highs of 29°C and overnight lows near 22°C, with 38 mm of rain across 14.7 wet days and about 12.2 hours of daylight. It is the 7th-warmest and 10th-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 25% of the time in October, and the air most often feels muggy.

Daylight stretches from about 12 h 06 min at the start of October to 12 h 18 min by month's end. Set against the rest of the year, October is Rio Formoso's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Rio Formoso's year-round climate.

Daytime high
29°
7th warmest
Overnight low
22°
5th coldest
Rainfall
38 mm
14.7 wet days
Daylight
12 h 12 min
5:00 AM – 5:12 PM
Cloud cover
52%
2nd clearest
Wind
11 km/h
2nd windiest
Solar energy
5.65 kWh/m²
Travel score
5.1
out of 10

Rio Formoso is settlement in Brazil.

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

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

A typical October day in Rio Formoso reaches about 29°C in the afternoon and slips back to 22°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, October runs about 1°C warmer than September and about 1°C cooler than November.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12822
22822
32822
42922
52922
62922
72922
82922
92922
102922
112922
122922
132922
142922
152922
162922
172922
182922
192922
202922
212922
222922
232922
242922
252923
262923
272923
282923
292923
302923
312923

How October really feels in Rio Formoso

Once humidity and wind are folded in, October 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

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

Rio Formoso weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°5617.312.44.1
Feb31° / 24°6116.912.33.8
Mar31° / 24°8019.512.13.8
Apr30° / 24°942111.83.8
May29° / 23°12324.111.63.9
Jun27° / 22°14124.711.54.3
Jul27° / 21°12324.811.54.5
Aug27° / 21°7822.211.74.8
Sep28° / 21°5417.511.95.3
Oct29° / 22°3814.712.25.1
Nov30° / 23°3011.512.45.0
Dec30° / 23°3212.512.54.6

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 47% of October, with mostly cloudy or overcast conditions the remaining 28%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17822
27822
37723
47723
57723
67624
77624
87624
97525
107327
117327
127228
137228
147228
157129
167129
177129
187030
197030
207030
216931
226931
236931
246931
256931
266931
277030
287030
297030
307129
317129

Chance of precipitation in October

Any precipitation

Rio Formoso gets around 38 mm of rain over 14.7 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 47% and peaks near 50% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
146
246
347
447
548
649
749
850
950
1050
1150
1250
1350
1449
1549
1648
1748
1848
1947
2047
2146
2246
2345
2445
2545
2644
2744
2844
2943
3043
3142

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the muggy band about 53% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
116039
216039
315940
415940
515940
615940
715841
815841
915841
1015742
1115742
1205743
1305743
1405644
1505545
1605545
1705446
1805347
1905248
2005149
2105050
2204951
2304852
2404753
2504654
2604555
2704555
2804456
2904456
3004456
3104357

Wind in October

Winds average 11 km/h in October.

Across October, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 06 min at the start of October to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over October. Sunrise moves from 5:07 AM to 4:55 AM, and sunset from 5:12 PM to 5:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:075:12
212.15:075:12
312.15:065:12
412.15:065:12
512.15:055:12
612.15:055:12
712.15:045:12
812.15:045:12
912.15:035:11
1012.15:035:11
1112.25:025:11
1212.25:025:11
1312.25:015:11
1412.25:015:11
1512.25:005:11
1612.25:005:12
1712.24:595:12
1812.24:595:12
1912.24:595:12
2012.24:585:12
2112.24:585:12
2212.24:585:12
2312.24:575:12
2412.34:575:12
2512.34:575:12
2612.34:565:12
2712.34:565:13
2812.34:565:13
2912.34:555:13
3012.34:555:13
3112.34:555:13

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.65 kWh/m².

For context, solar energy here swings from a low near 3.87 kWh/m² to a high of 5.85 kWh/m² in November across the year — October's 5.65 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.6Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in October

Hazard calendar for Rio Formoso

In seasonPeak

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

Rio Formoso's rainy season runs March–August, when most of the year's rain falls.

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

Is October a good time to visit Rio Formoso?

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

5.1
Sightseeing
2nd-best month of the year
6.4
Beach & pool
3rd-best month of the year

October is a reasonable time to visit Rio Formoso for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Rio Formoso in October

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

In October, Rio Formoso sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

Sea temperature near Rio Formoso in October

The nearest coast averages about 27°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 23 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
Jan28Warm
Feb28Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul26Warm
Aug26Warm
Sep26Warm
Oct27Warm
Nov27Warm
Dec27Warm

UV index in Rio Formoso in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October 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 Rio Formoso peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 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 14UV 15Jun 23UV 10
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec12Extreme
Location & terrain

Where is Rio Formoso?

Rio Formoso sits at 8.7°S, 35.2°W, 87 m above sea level, in Brazil. The nearest listed city is Sirinhaém, 10 km away.

Topography around Rio Formoso

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

Within 3 km, the terrain around Rio Formoso has only modest variations in elevation — a maximum elevation change of 138 m around an average of 70 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 179 m; within 80 km, large variations in elevation — a maximum elevation change of 859 m.

The land around Rio Formoso is covered by trees (55%) and grassland (35%) within 3 km, trees (36%) and grassland (32%) within 16 km, and grassland (43%) and water (32%) within 80 km.

3 km
138 m
16 km
179 m
80 km
859 m
treesgrasslandcroplandartificial surfaceswatermangroves
October weather nearby: Sirinhaém 10 km · Tamandaré 12 km · Barreiros 17 km · São José da Coroa Grande 26 km · Gameleira 26 km · Ribeirão 29 km · Porto de Galinhas 32 km · Escada 35 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 Rio Formoso (-8.6688°, -35.1628°, elevation 87 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).