Santa Clara weather in September

In September, Santa Clara sees average daytime highs of 30°C and overnight lows near 16°C, with 60 mm of rain across 11.9 wet days and about 11.9 hours of daylight. It is the 2nd-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 41% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 11 h 48 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Santa Clara's 5th-clearest and 5th-windiest month. For the whole year in context, see Santa Clara's year-round climate.

Daytime high
30°
2nd warmest
Overnight low
16°
4th coldest
Rainfall
60 mm
11.9 wet days
Daylight
11 h 54 min
5:54 AM – 5:51 PM
Cloud cover
48%
5th clearest
Wind
6 km/h
5th windiest
Solar energy
5.85 kWh/m²
Travel score
5.0
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical September day in Santa Clara reaches about 30°C in the afternoon and slips back to 16°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, September runs on par with August and about 2°C warmer than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13015
23015
33015
43015
53015
63015
73015
83015
93016
103016
113016
123016
133016
143016
153016
163016
173016
183016
193016
203016
213016
222916
232917
242917
252917
262917
272917
282917
292917
302917

Santa Clara weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 17°11016.112.55.3
Feb28° / 17°9313.712.35.4
Mar28° / 18°1832112.14.5
Apr28° / 18°1041711.85.1
May29° / 16°122.311.56.9
Jun29° / 14°00.111.47.7
Jul29° / 13°0011.57.3
Aug30° / 14°40.911.76.4
Sep30° / 16°6011.911.95.0
Oct28° / 17°1712612.23.8
Nov27° / 17°1912512.54.0
Dec26° / 17°13919.912.64.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 29% of September, with mostly cloudy or overcast conditions the remaining 30%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18416
28416
38416
48416
58218
68119
78119
88020
97921
107822
117723
127624
137525
147426
157228
167129
176931
186931
196733
206634
216436
226337
236139
245941
255941
265743
275545
285446
295347
305149

Chance of precipitation in September

Any precipitation

Santa Clara gets around 60 mm of rain over 11.9 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 40% and peaks near 71% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
111
212
313
415
516
617
719
821
923
1025
1127
1230
1332
1435
1538
1641
1744
1846
1949
2052
2154
2257
2359
2462
2563
2665
2767
2868
2969
3071

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 43% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1444880
2424990
34150100
43950110
53751120
63552130
73353140
83154150
92954170
102754190
112455210
122254240
131954270
141752310
151551340
161349380
171147420
18945460
19743490
20641530
21538570
22335620
23333631
24230671
25128701
26125731
27123742
28021772
29020773
30018793

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 48 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 18 minutes over September. Sunrise moves from 6:04 AM to 5:45 AM, and sunset from 5:52 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:045:52
211.86:035:52
311.86:035:52
411.86:025:52
511.86:015:52
611.86:015:52
711.96:005:52
811.96:005:52
911.95:595:51
1011.95:585:51
1111.95:585:51
1211.95:575:51
1311.95:565:51
1411.95:565:51
1511.95:555:51
1611.95:545:51
1712.05:545:51
1812.05:535:51
1912.05:525:51
2012.05:525:51
2112.05:515:51
2212.05:505:50
2312.05:505:50
2412.05:495:50
2512.05:485:50
2612.05:485:50
2712.15:475:50
2812.15:465:50
2912.15:465:50
3012.15:455:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.85 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 5.29 kWh/m² to a high of 5.85 kWh/m² in September across the year — September's 5.85 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
135.9Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
Planning a trip in September

Hazard calendar for Santa Clara

In seasonPeak

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

Santa Clara's rainy season runs October–April, when most of the year's rain falls.

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

Is September a good time to visit Santa Clara?

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

5.0
Sightseeing
8th-best month of the year
6.7
Beach & pool
5th-best month of the year

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

What to pack for Santa Clara in September

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

In September, Santa Clara sees daytime highs around 30°C and nights near 16°C. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Santa Clara in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (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 Clara peaks around March 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 11 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 13UV 15Aug 11UV 9
UV index (midday)Level
Jan16Extreme
Feb15Extreme
Mar16Extreme
Apr14Extreme
May10Extreme
Jun9Very high
Jul9Very high
Aug9Very high
Sep11Extreme
Oct13Extreme
Nov12Extreme
Dec13Extreme

Air quality in Santa Clara 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 Santa Clara is worst in July — around 184 µg/m³ PM2.5 (very unhealthy), about 22.1× the cleanest month (December, 8 µg/m³).

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateUnhealthyVery unhealthyUnhealthyModerateGoodJul 18175 µg/m³Dec 148 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar10Good
Apr9Good
May24Moderate
Jun96Unhealthy
Jul184Very unhealthy
Aug120Unhealthy
Sep40Poor
Oct16Moderate
Nov9Good
Dec8Good
Location & terrain

Where is Santa Clara?

Santa Clara sits at 10.2°S, 15.4°E, 1,030 m above sea level, in Angola. The nearest listed city is Calulo, 63 km away.

BailundoCacusoLucalaN'dalatandoCangandala

Topography around Santa Clara

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

Within 3 km, the terrain around Santa Clara has only modest variations in elevation — a maximum elevation change of 217 m around an average of 1,048 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 571 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,623 m.

The land around Santa Clara is covered by grassland (49%), trees (30%) and shrubs (20%) within 3 km, trees (52%) and grassland (31%) within 16 km, and trees (45%) and grassland (41%) within 80 km.

3 km
217 m
16 km
571 m
80 km
1,623 m
treesshrubsgrasslandcroplandwater
September weather nearby: Calulo 63 km · Mussende 73 km · Quibala 78 km · Bailundo 92 km · Cacuso 92 km · Lucala 104 km · N'dalatando 115 km · Cangandala 118 km

Angola travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
220 V · 50 Hz
Prices
≈ 35% of US
price level, 2025
GDP per capita
$3,129
2025
Happiness
3.8 / 10
World Happiness, 2017
Homicide rate
4.1
per 100k, 2016
Road deaths
26.1
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Very low
EF EPI 413
Religion
Roman Catholic 41%Protestant 38%none 12%other 9%

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 Clara (-10.1916°, 15.4341°, elevation 1,030 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).