Suai weather in September

In September, Suai sees average daytime highs of 28°C and overnight lows near 21°C, with 10 mm of rain across 2 wet days and about 11.9 hours of daylight. It is the 7th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 51% of the time in September, and the air most often feels muggy.

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 Suai's 1st-clearest and 5th-windiest month. For the whole year in context, see Suai's year-round climate.

Daytime high
28°
7th warmest
Overnight low
21°
3rd coldest
Rainfall
10 mm
2 wet days
Daylight
11 h 54 min
6:35 AM – 6:32 PM
Cloud cover
43%
1st clearest
Wind
7 km/h
5th windiest
Solar energy
6.57 kWh/m²
Travel score
7.1
out of 10

Suai is city in Cova Lima District.

Density
71/km²
people per km²

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical September day in Suai reaches about 28°C in the afternoon and slips back to 21°C overnight — a 8°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, September runs about 1°C warmer than August and about 1°C cooler than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12820
22820
32820
42820
52820
62820
72820
82820
92820
102820
112820
122820
132820
142820
152821
162921
172921
182921
192921
202921
212921
222921
232921
242921
252921
262921
272921
282921
292921
302921

How September really feels in Suai

Once humidity and wind are folded in, September 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

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

Suai weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 23°24627.112.53.3
Feb29° / 23°21324.512.33.3
Mar29° / 23°19321.812.14.1
Apr28° / 22°11214.111.85.2
May28° / 22°8311.911.66.2
Jun27° / 21°569.611.56.6
Jul27° / 20°287.311.57.1
Aug27° / 20°112.511.77.8
Sep28° / 21°10211.97.1
Oct30° / 22°203.512.26.2
Nov30° / 23°64812.45.1
Dec29° / 24°1992212.53.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 30%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16931
26931
37030
47030
57030
67030
77030
87030
97030
107030
117030
127030
137030
147129
157030
167030
177030
187030
197030
207030
217030
227030
237030
247030
257030
266931
276931
287030
297030
307030

Chance of precipitation in September

Any precipitation

Suai gets around 10 mm of rain over 2 wet days in September, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 7% and peaks near 9% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
17
26
36
46
56
66
76
86
96
105
115
125
136
146
156
166
176
187
197
207
217
227
238
248
258
268
278
288
299
309

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 53% of days. Sticky, muggy-or-worse air turns up on roughly 59% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
111039473
211039473
311039474
41940474
51940474
60940474
70840484
80840484
90740484
100740494
110740495
120639495
130639505
140539515
150538516
160537526
170537517
180436537
190435538
200434548
210333559
220332569
2303305710
2403295810
2503285811
2603275911
2703266011
2803256012
2902246113
3002236213

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 6:44 AM to 6:26 AM, and sunset from 6:33 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:446:33
211.86:446:33
311.86:436:33
411.86:426:33
511.96:426:33
611.96:416:33
711.96:406:33
811.96:406:33
911.96:396:33
1011.96:396:32
1111.96:386:32
1211.96:376:32
1311.96:376:32
1411.96:366:32
1511.96:356:32
1611.96:356:32
1712.06:346:32
1812.06:346:32
1912.06:336:31
2012.06:326:31
2112.06:326:31
2212.06:316:31
2312.06:306:31
2412.06:306:31
2512.06:296:31
2612.06:296:31
2712.06:286:31
2812.16:276:31
2912.16:276:31
3012.16:266:30

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.57 kWh/m².

For context, solar energy here swings from a low near 4.59 kWh/m² to a high of 6.82 kWh/m² in October across the year — September's 6.57 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.4Intense
66.4Intense
76.4Intense
86.4Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.5Intense
146.5Intense
156.5Intense
166.6Intense
176.6Intense
186.6Intense
196.6Intense
206.6Intense
216.6Intense
226.7Intense
236.7Intense
246.7Intense
256.7Intense
266.7Intense
276.7Intense
286.7Intense
296.8Intense
306.8Intense
Planning a trip in September

Hazard calendar for Suai

In seasonPeak

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

Suai sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Suai's monsoon runs December–April, when most of the year's rain falls.

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

Is September a good time to visit Suai?

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

7.1
Sightseeing
2nd-best month of the year
8.4
Beach & pool
1st-best month of the year

September is one of the better times to visit Suai for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Suai in September

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

In September, Suai sees daytime highs around 28°C and nights near 21°C. Pack light clothes and sun protection.

light clothessun protection

Sea temperature near Suai in September

The nearest coast averages about 28°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 15 km away) is warmest in December at about 30°C and coldest in August near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan30Tropical
Feb30Tropical
Mar30Tropical
Apr30Tropical
May29Tropical
Jun28Warm
Jul27Warm
Aug27Warm
Sep28Warm
Oct29Tropical
Nov30Tropical
Dec30Tropical

UV index in Suai in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Suai peaks around March 10 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 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 10UV 16Jul 10UV 9
UV index (midday)Level
Jan14Extreme
Feb16Extreme
Mar16Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul9Very high
Aug12Extreme
Sep14Extreme
Oct14Extreme
Nov14Extreme
Dec13Extreme
Location & terrain

Where is Suai?

Suai sits at 9.3°S, 125.3°E, 73 m above sea level, in Timor Leste. The nearest listed city is Maliana, 36 km away.

MalianaAtsabeAtambuaGlenoAileuMaubaraLiquiçáKefamenanu

Topography around Suai

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

Within 3 km, the terrain around Suai has only modest variations in elevation — a maximum elevation change of 214 m around an average of 52 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,581 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,916 m.

The land around Suai is covered by trees (50%) and grassland (38%) within 3 km, trees (56%) and water (34%) within 16 km, and trees (40%) and water (40%) within 80 km.

3 km
214 m
16 km
1,581 m
80 km
2,916 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Maliana 36 km · Atsabe 46 km · Atambua 46 km · Gleno 68 km · Aileu 73 km · Maubara 78 km · Liquiçá 81 km · Kefamenanu 87 km

Timor Leste travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E / F / I
220 V · 50 Hz
Prices
≈ 28% of US
price level, 2025
GDP per capita
$1,341
2025
Homicide rate
4.1
per 100k, 2015
Road deaths
11.9
per 100k/yr, 2019
Income group
Lower middle
World Bank
Religion
Catholic 91%other 7%Protestant Evangelical 2%

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 Suai (-9.3129°, 125.2565°, elevation 73 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).