Santa Helena weather in October

In October, Santa Helena sees average daytime highs of 33°C and overnight lows near 24°C, with 15 mm of rain across 4 wet days and about 12 hours of daylight. It is the 2nd-warmest and 12th-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 51% of the time in October, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of October to 12 h 06 min by month's end. Set against the rest of the year, October is Santa Helena's 3rd-clearest and 1st-windiest month. For the whole year in context, see Santa Helena's year-round climate.

Daytime high
33°
2nd warmest
Overnight low
24°
10th coldest
Rainfall
15 mm
4 wet days
Daylight
12 hours
5:45 AM – 5:48 PM
Cloud cover
44%
3rd clearest
Wind
12 km/h
1st windiest
Solar energy
5.99 kWh/m²
Travel score
4.3
out of 10

Santa Helena 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 33°C through the month.

A typical October day in Santa Helena reaches about 33°C in the afternoon and slips back to 24°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 34°C. Set against its neighbours, October runs on par with September and on par with November.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13224
23224
33224
43224
53224
63224
73324
83324
93324
103324
113324
123324
133324
143324
153324
163324
173324
183324
193324
203324
213324
223324
233324
243324
253324
263324
273324
283324
293324
303324
313324

How October really feels in Santa Helena

Once humidity and wind are folded in, October averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Santa Helena weather by month

How October compares with the rest of the year at a glance. October is the 2nd-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°18423.412.12.9
Feb30° / 24°25325.512.12.8
Mar30° / 24°35429.8122.7
Apr30° / 24°33528.7122.7
May30° / 24°23826.411.93.0
Jun30° / 23°11921.311.93.7
Jul30° / 23°8117.911.94.3
Aug31° / 23°3210.511.94.7
Sep32° / 24°175124.7
Oct33° / 24°154124.3
Nov33° / 24°255.312.14.0
Dec33° / 24°6512.512.13.4

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 27% of October, with mostly cloudy or overcast conditions the remaining 22%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18713
28614
38515
48515
58416
68317
78317
88317
98119
108119
118020
128020
138020
148020
157921
167921
177921
187822
197822
207822
217723
227624
237624
247426
257426
267327
277228
287228
297030
307030
316832

Chance of precipitation in October

Any precipitation

Santa Helena gets around 15 mm of rain over 4 wet days in October, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 13% and peaks near 15% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
111
211
311
411
511
611
711
812
912
1013
1113
1213
1314
1414
1514
1614
1714
1814
1914
2015
2115
2215
2315
2415
2515
2615
2715
2815
2915
3015
3115

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the oppressive band about 95% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)
1595
2595
3595
4595
5595
6595
7595
8595
9595
10595
11595
12496
13496
14496
15496
16496
17496
18496
19496
20496
21496
22496
23496
24496
25496
26496
27595
28496
29496
30496
31496

Wind in October

Winds average 12 km/h in October, the windiest month of the year.

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

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in October

DaylightNight

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

Days grow by about 6 minutes over October. Sunrise moves from 5:50 AM to 5:42 AM, and sunset from 5:51 PM to 5:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.05:505:51
212.05:495:51
312.05:495:50
412.05:485:50
512.05:485:50
612.05:485:50
712.05:475:49
812.05:475:49
912.05:475:49
1012.05:465:49
1112.05:465:49
1212.05:465:48
1312.05:465:48
1412.05:455:48
1512.05:455:48
1612.05:455:48
1712.15:445:48
1812.15:445:47
1912.15:445:47
2012.15:445:47
2112.15:445:47
2212.15:435:47
2312.15:435:47
2412.15:435:47
2512.15:435:47
2612.15:435:47
2712.15:435:47
2812.15:435:47
2912.15:435:47
3012.15:425:47
3112.15:425:47

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.99 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.94 kWh/m² to a high of 5.99 kWh/m² in October across the year — October's 5.99 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.0Bright
26.0Bright
36.0Bright
46.0Bright
56.0Bright
66.0Bright
76.0Bright
86.0Bright
96.0Bright
106.0Bright
116.0Bright
126.0Bright
136.0Bright
146.0Bright
156.0Bright
166.0Bright
176.0Bright
186.0Bright
196.0Bright
206.0Bright
216.0Bright
226.0Bright
236.0Bright
246.0Bright
256.0Bright
266.0Bright
276.0Bright
286.0Bright
296.0Bright
306.0Bright
315.9Bright
Planning a trip in October

Hazard calendar for Santa Helena

In seasonPeak

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

Santa Helena'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 October a good time to visit Santa Helena?

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

4.3
Sightseeing
3rd-best month of the year
7.3
Beach & pool
2nd-best month of the year

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

What to pack for Santa Helena in October

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

In October, Santa Helena sees daytime highs around 33°C and nights near 24°C. Pack light clothes. Worth having: sun protection. About 4 days see rain.

light clothessun protection

UV index in Santa Helena 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 Santa Helena peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 15Jul 15UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Santa Helena in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Santa Helena is worst in February — around 18 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (July, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateFeb 2018 µg/m³Jul 137 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb18Moderate
Mar17Moderate
Apr13Moderate
May9Good
Jun8Good
Jul7Good
Aug8Good
Sep9Good
Oct10Good
Nov11Good
Dec13Moderate
Location & terrain

Where is Santa Helena?

Santa Helena sits at 2.2°S, 45.3°W, 12 m above sea level, in Brazil. The nearest listed city is Turilândia, 1.0 km away.

Topography around Santa Helena

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

Within 3 km, the terrain around Santa Helena has only modest variations in elevation — a maximum elevation change of 27 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 72 m; within 80 km, only modest variations in elevation — a maximum elevation change of 170 m.

The land around Santa Helena is covered by grassland (56%) within 3 km, grassland (46%) and trees (42%) within 16 km, and trees (57%) and grassland (32%) within 80 km.

3 km
27 m
16 km
72 m
80 km
170 m
treesgrasslandartificial surfaceswaterwetlandmangroves
October weather nearby: Turilândia 1.0 km · Pinheiro 40 km · Presidente Sarney 41 km · Bacuri 59 km · Bequimão 62 km · Santa Luzia do Paruá 63 km · Turiaçu 64 km · Palmeirândia 64 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 Helena (-2.2311°, -45.3°, elevation 12 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).