Caia weather in September

In September, Caia sees average daytime highs of 32°C and overnight lows near 20°C, with 7 mm of rain across 1.6 wet days and about 11.9 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 31°C in the first days to 33°C by the end. The sky is clear or mostly clear about 73% of the time in September, and the air most often feels humid.

Daylight stretches from about 11 h 36 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Caia's 1st-clearest and 3rd-windiest month. For the whole year in context, see Caia's year-round climate.

Daytime high
32°
4th warmest
Overnight low
20°
5th coldest
Rainfall
7 mm
1.6 wet days
Daylight
11 h 54 min
5:36 AM – 5:30 PM
Cloud cover
25%
1st clearest
Wind
11 km/h
3rd windiest
Solar energy
5.9 kWh/m²
Travel score
4.9
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 31°C in the first days to 33°C by the end.

A typical September day in Caia reaches about 32°C in the afternoon and slips back to 20°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 37°C. Set against its neighbours, September runs about 3°C warmer than August and about 2°C cooler than October.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13119
23119
33119
43119
53119
63219
73219
83219
93219
103219
113220
123220
133220
143220
153320
163320
173320
183320
193320
203320
213320
223321
233321
243321
253321
263321
273321
283421
293421
303421

How September really feels in Caia

Once humidity and wind are folded in, September averages 20 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
20
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Caia weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 24°18418.612.93.1
Feb32° / 24°11514.812.63.3
Mar32° / 23°8913.912.13.9
Apr31° / 22°306.611.65.2
May29° / 19°102.411.26.7
Jun27° / 17°61.8118.0
Jul27° / 17°92.7118.0
Aug29° / 18°41.111.46.8
Sep32° / 20°71.611.94.9
Oct34° / 22°132.712.43.7
Nov35° / 24°496.812.82.8
Dec33° / 24°13215.3132.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 73% 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 13%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18812
28812
38812
48812
58812
68812
78713
88713
98812
108812
118812
128713
138713
148713
158812
168812
178812
188812
198812
208713
218713
228713
238713
248713
258713
268713
278614
288614
298614
308614

Chance of precipitation in September

Any precipitation

Caia gets around 7 mm of rain over 1.6 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 5% and peaks near 6% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
14
24
34
44
54
65
75
85
95
105
115
125
135
145
155
165
174
184
194
204
215
225
235
245
255
265
275
286
296
306

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 49% of days. Sticky, muggy-or-worse air turns up on roughly 16% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
17464260
26454360
36454360
46444460
56434470
65424570
75414580
85404690
95394790
1053847100
1143748100
1243649110
1343449120
1443350131
1543151131
1643051141
1742852151
1842752161
1942652171
2032553181
2132353192
2232253202
2332153212
2432053222
2532052232
2631952242
2731853242
2831852252
2931752262
3031752262

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 36 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 30 minutes over September. Sunrise moves from 5:49 AM to 5:24 AM, and sunset from 5:28 PM to 5:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:495:28
211.75:485:28
311.75:475:28
411.75:465:28
511.75:465:28
611.75:455:29
711.75:445:29
811.85:435:29
911.85:425:29
1011.85:415:29
1111.85:405:29
1211.85:395:29
1311.85:395:30
1411.95:385:30
1511.95:375:30
1611.95:365:30
1711.95:355:30
1811.95:345:30
1912.05:335:30
2012.05:325:31
2112.05:315:31
2212.05:315:31
2312.05:305:31
2412.05:295:31
2512.15:285:31
2612.15:275:32
2712.15:265:32
2812.15:255:32
2912.15:255:32
3012.15:245:32

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.9 kWh/m².

For context, solar energy here swings from a low near 3.93 kWh/m² to a high of 6.56 kWh/m² in November across the year — September's 5.9 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.5Bright
35.5Bright
45.5Bright
55.6Bright
65.6Bright
75.7Bright
85.7Bright
95.7Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.9Bright
155.9Bright
165.9Bright
176.0Bright
186.0Bright
196.0Intense
206.0Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
Planning a trip in September

Hazard calendar for Caia

In seasonPeak

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

Caia's monsoon runs December–March, when most of the year's rain falls.

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

Is September a good time to visit Caia?

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

4.9
Sightseeing
6th-best month of the year
8.1
Beach & pool
5th-best month of the year

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

What to pack for Caia in September

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

In September, Caia sees daytime highs around 32°C and nights near 20°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Caia in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Caia peaks around January 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 16UV 14Jun 21UV 7
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun7High
Jul7High
Aug8Very high
Sep9Very high
Oct12Extreme
Nov12Extreme
Dec14Extreme

Air quality in Caia 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 Caia is worst in September — around 44 µg/m³ PM2.5 (poor), about 6.7× the cleanest month (March, 7 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModerateGoodSep 1343 µg/m³Mar 247 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar7Good
Apr7Good
May8Good
Jun9Good
Jul21Moderate
Aug37Poor
Sep44Poor
Oct28Moderate
Nov14Moderate
Dec7Good
Location & terrain

Where is Caia?

Caia sits at 17.8°S, 35.3°E, 35 m above sea level, in Mozambique. The nearest listed city is Morrumbala, 60 km away.

ChindeQuelimaneGorongosaNamacurraMilange

Topography around Caia

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

Within 3 km, the terrain around Caia has only modest variations in elevation — a maximum elevation change of 27 m around an average of 30 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 240 m; within 80 km, large variations in elevation — a maximum elevation change of 1,127 m.

The land around Caia is covered by cropland (45%) within 3 km, cropland (31%) and trees (24%) within 16 km, and trees (51%) within 80 km.

3 km
27 m
16 km
240 m
80 km
1,127 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Morrumbala 60 km · Marromeu 82 km · Nsanje 100 km · Chinde 145 km · Quelimane 164 km · Gorongosa 165 km · Namacurra 182 km · Milange 197 km

Mozambique travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F / M
220 V · 50 Hz
Prices
≈ 37% of US
price level, 2025
GDP per capita
$627
2025
Happiness
5.3 / 10
World Happiness, 2025
Safe drinking water
28%
of population, 2024
Homicide rate
3.6
per 100k, 2011
Road deaths
30
per 100k/yr, 2019
Income group
Low
World Bank
English
Low
EF EPI 465
Religion
Catholic 27%Islam 19%Pentecostal 17%Saio/Zione 16%

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 Caia (-17.8203°, 35.3442°, elevation 35 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).