Santa Helena weather in July

In July, Santa Helena sees average daytime highs of 23°C and overnight lows near 14°C, with 99 mm of rain across 7.9 wet days and about 10.6 hours of daylight. It is the 11th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 48% of the time in July, and the air most often feels dry.

Daylight stretches from about 10 h 30 min at the start of July to 10 h 48 min by month's end. Set against the rest of the year, July is Santa Helena's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Santa Helena's year-round climate.

Daytime high
23°
11th warmest
Overnight low
14°
1st coldest
Rainfall
99 mm
7.9 wet days
Daylight
10 h 36 min
8:25 AM – 7:01 PM
Cloud cover
45%
2nd clearest
Wind
12 km/h
2nd windiest
Solar energy
3.31 kWh/m²
Travel score
7.4
out of 10

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 23°C through the month.

A typical July day in Santa Helena reaches about 23°C in the afternoon and slips back to 14°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 29°C. Set against its neighbours, July runs on par with June and about 3°C cooler than August.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12315
22315
32315
42315
52314
62314
72314
82314
92314
102314
112314
122314
132314
142314
152314
162314
172314
182314
192314
202314
212314
222314
232314
242314
252314
262314
272314
282414
292414
302414
312414

How July really feels in Santa Helena

Once humidity and wind are folded in, July 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

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

Santa Helena weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°12815.213.43.9
Feb31° / 23°12513.812.94.0
Mar30° / 22°1011212.24.7
Apr28° / 19°1068.411.46.3
May24° / 16°1399.110.87.1
Jun23° / 15°1148.810.57.1
Jul23° / 14°997.910.67.4
Aug25° / 15°856.511.17.7
Sep27° / 17°1339.211.86.8
Oct29° / 20°16212.612.65.3
Nov30° / 21°13311.613.24.9
Dec31° / 22°15414.413.54.2

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 13% of July, with mostly cloudy or overcast conditions the remaining 39%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25446
35545
45644
55743
65842
75941
85941
96040
106040
116040
126040
136040
146139
156238
166238
176238
186337
196436
206436
216436
226436
236436
246436
256436
266436
276436
286436
296436
306436
316436

Chance of precipitation in July

Any precipitation

Santa Helena gets around 99 mm of rain over 7.9 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 26% and peaks near 31% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
131
230
330
429
528
627
726
826
925
1025
1125
1225
1325
1426
1526
1626
1726
1826
1926
2026
2126
2226
2326
2426
2525
2625
2724
2824
2923
3023
3123

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the dry band about 37% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12733365
22733364
32832354
42932344
53132344
63232334
73332323
83432313
93532303
103633292
113833272
123933262
134033252
144033242
154134232
164134232
174234222
184235222
194235212
204235212
214236212
224136212
234136212
244136212
254037222
264037222
274037222
283937222
293937222
303837232
313837232

Wind in July

Winds average 12 km/h in July.

Across July, 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
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 10 h 30 min at the start of July to 10 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over July. Sunrise moves from 8:26 AM to 8:19 AM, and sunset from 6:55 PM to 7:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.58:266:55
210.58:276:55
310.58:276:56
410.58:276:56
510.58:276:56
610.58:276:57
710.58:266:57
810.58:266:57
910.58:266:58
1010.58:266:58
1110.58:266:59
1210.68:266:59
1310.68:266:59
1410.68:267:00
1510.68:257:00
1610.68:257:01
1710.68:257:01
1810.68:257:02
1910.68:247:02
2010.68:247:03
2110.78:247:03
2210.78:237:04
2310.78:237:04
2410.78:227:04
2510.78:227:05
2610.78:227:05
2710.78:217:06
2810.88:217:06
2910.88:207:07
3010.88:207:07
3110.88:197:08

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 3.31 kWh/m².

For context, solar energy here swings from a low near 2.97 kWh/m² to a high of 6.39 kWh/m² in December across the year — July's 3.31 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.0Moderate
23.0Moderate
33.0Moderate
43.0Moderate
53.0Moderate
63.1Moderate
73.1Moderate
83.1Moderate
93.1Moderate
103.1Moderate
113.2Moderate
123.2Moderate
133.2Moderate
143.2Moderate
153.3Moderate
163.3Moderate
173.3Moderate
183.3Moderate
193.4Moderate
203.4Moderate
213.4Moderate
223.4Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.6Moderate
273.6Moderate
283.6Moderate
293.6Moderate
303.7Moderate
313.7Moderate
Planning a trip in July

Is July a good time to visit Santa Helena?

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

7.4
Sightseeing
2nd-best month of the year
5.7
Beach & pool
11th-best month of the year

July is one of the better times to visit Santa Helena for general sightseeing.

What to pack for Santa Helena in July

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

In July, Santa Helena sees daytime highs around 23°C and nights near 14°C. Worth packing: light clothes. About 8 days see rain.

light clothes

UV index in Santa Helena in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Santa Helena peaks around January 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighExtremeJan 19UV 15Jul 11UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May6High
Jun5High
Jul5Moderate
Aug7High
Sep6High
Oct10Very high
Nov12Extreme
Dec13Extreme

Air quality in Santa Helena in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Santa Helena is worst in September — around 21 µg/m³ PM2.5 (moderate), about 3.6× the cleanest month (March, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1620 µg/m³Mar 156 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb6Good
Mar6Good
Apr7Good
May7Good
Jun8Good
Jul7Good
Aug12Moderate
Sep21Moderate
Oct12Good
Nov8Good
Dec7Good
Location & terrain

Where is Santa Helena?

Santa Helena sits at 24.9°S, 54.3°W, 254 m above sea level, in Brazil. The nearest listed city is Marechal Cândido Rondon, 44 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 72 m around an average of 238 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 259 m; within 80 km, large variations in elevation — a maximum elevation change of 674 m.

The land around Santa Helena is covered by cropland (31%), trees (30%) and water (20%) within 3 km, trees (33%), cropland (31%) and water (28%) within 16 km, and cropland (57%) and trees (28%) within 80 km.

3 km
72 m
16 km
259 m
80 km
674 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Marechal Cândido Rondon 44 km · Medianeira 54 km · Matelândia 55 km · São Miguel do Iguaçu 55 km · Toledo 62 km · Santa Terezinha de Itaipu 65 km · Ciudad del Este 78 km · Foz do Iguacu 81 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 (-24.8603°, -54.3328°, elevation 254 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).