Driyorejo weather in September

In September, Driyorejo sees average daytime highs of 33°C and overnight lows near 24°C, with 25 mm of rain across 4 wet days and about 12 hours of daylight. It is the 2nd-warmest and 10th-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 42% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Driyorejo's 2nd-clearest and 5th-windiest month. For the whole year in context, see Driyorejo's year-round climate.

Daytime high
33°
2nd warmest
Overnight low
24°
3rd coldest
Rainfall
25 mm
4 wet days
Daylight
12 hours
5:25 AM – 5:23 PM
Cloud cover
49%
2nd clearest
Wind
6 km/h
5th windiest
Solar energy
6.62 kWh/m²
Travel score
4.1
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 33°C through the month.

A typical September day in Driyorejo 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 32°C and 34°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13223
23223
33323
43323
53323
63323
73323
83323
93323
103323
113323
123324
133324
143324
153324
163324
173324
183324
193324
203324
213324
223324
233324
243324
253324
263324
273324
283324
293324
303324

How September really feels in Driyorejo

Once humidity and wind are folded in, September averages 30 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
30
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.

Driyorejo weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 25°35329.212.42.4
Feb31° / 25°34427.412.22.3
Mar31° / 25°32729.1122.4
Apr32° / 25°21224.411.82.7
May32° / 25°9014.911.73.7
Jun31° / 24°508.911.64.5
Jul31° / 23°234.811.65.0
Aug32° / 23°92.511.84.9
Sep33° / 24°254124.1
Oct33° / 25°8512.612.23.1
Nov33° / 25°20923.712.32.4
Dec32° / 25°32327.912.42.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 20% of September, with mostly cloudy or overcast conditions the remaining 38%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16832
26733
36733
46733
56733
66733
76634
86535
96535
106535
116436
126436
136436
146337
156337
166238
176238
186139
196139
206040
215941
225941
235941
245842
255842
265842
275842
285743
295644
305644

Chance of precipitation in September

Any precipitation

Driyorejo gets around 25 mm of rain over 4 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 14% and peaks near 22% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
111
211
311
410
510
610
710
810
911
1011
1111
1211
1311
1412
1512
1613
1713
1814
1914
2015
2115
2216
2317
2417
2518
2619
2720
2820
2921
3022

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 49% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1349462
2448462
3448472
4447472
5447472
6446472
7546472
8546472
9546472
10545473
11545473
12545473
13544474
14544484
15543484
16542485
17542485
18542486
19441496
20441496
21441497
22340507
23340507
24339517
25239518
26239518
27238528
28237538
29236548
30235558

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 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
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 54 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 12 minutes over September. Sunrise moves from 5:33 AM to 5:17 AM, and sunset from 5:25 PM to 5:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:335:25
211.95:335:25
311.95:325:25
411.95:325:25
511.95:315:24
611.95:315:24
711.95:305:24
811.95:305:24
911.95:295:24
1011.95:295:24
1111.95:285:23
1211.95:275:23
1311.95:275:23
1411.95:265:23
1512.05:265:23
1612.05:255:23
1712.05:245:22
1812.05:245:22
1912.05:235:22
2012.05:235:22
2112.05:225:22
2212.05:225:22
2312.05:215:22
2412.05:205:21
2512.05:205:21
2612.05:195:21
2712.05:195:21
2812.05:185:21
2912.15:185:21
3012.15:175:21

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.62 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.86 kWh/m² to a high of 6.62 kWh/m² in September across the year — September's 6.62 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.4Intense
26.4Intense
36.4Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.5Intense
96.6Intense
106.6Intense
116.6Intense
126.6Intense
136.6Intense
146.6Intense
156.6Intense
166.7Intense
176.7Intense
186.7Intense
196.7Intense
206.7Intense
216.7Intense
226.7Intense
236.7Intense
246.7Intense
256.7Intense
266.7Intense
276.7Intense
286.7Intense
296.7Intense
306.7Intense
Planning a trip in September

Hazard calendar for Driyorejo

In seasonPeak

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

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

Driyorejo's monsoon runs November–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 Driyorejo?

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

4.1
Sightseeing
4th-best month of the year
7.1
Beach & pool
3rd-best month of the year

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

What to pack for Driyorejo in September

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

In September, Driyorejo sees daytime highs around 33°C and nights near 24°C. Pack light clothes and sun protection. About 4 days see rain.

light clothessun protection

Sea temperature near Driyorejo 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 28 km away) is warmest in November at about 30°C and coldest in August near 28°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
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun29Tropical
Jul28Tropical
Aug28Tropical
Sep28Tropical
Oct29Tropical
Nov30Tropical
Dec30Tropical

UV index in Driyorejo in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Driyorejo peaks around March 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 16 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 17UV 13Jun 16UV 8
UV index (midday)Level
Jan10Very high
Feb11Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun7Very high
Jul9Very high
Aug11Extreme
Sep13Extreme
Oct11Extreme
Nov10Extreme
Dec11Extreme

Air quality in Driyorejo 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 Driyorejo is worst in May — around 101 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyMay 13101 µg/m³Aug 2267 µg/m³
PM2.5 (µg/m³)Level
Jan76Unhealthy
Feb71Unhealthy
Mar87Unhealthy
Apr99Unhealthy
May101Unhealthy
Jun95Unhealthy
Jul81Unhealthy
Aug66Unhealthy
Sep69Unhealthy
Oct80Unhealthy
Nov87Unhealthy
Dec81Unhealthy
Location & terrain

Where is Driyorejo?

Driyorejo sits at 7.4°S, 112.6°E, 13 m above sea level, in Indonesia. The nearest listed city is Krian, 7.0 km away.

Topography around Driyorejo

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

Within 3 km, the terrain around Driyorejo has only modest variations in elevation — a maximum elevation change of 35 m around an average of 14 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 85 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,306 m.

The land around Driyorejo is covered by artificial surfaces (51%) and cropland (26%) within 3 km, artificial surfaces (41%) and cropland (38%) within 16 km, and trees (31%), water (30%) and cropland (27%) within 80 km.

3 km
35 m
16 km
85 m
80 km
3,306 m
treesgrasslandcroplandartificial surfaceswaterwetlandmangroves
September weather nearby: Krian 7.0 km · Gedangan 12 km · Tulangan Utara 12 km · Buduran 13 km · Sidoarjo 14 km · Tanggulangin 17 km · Surabaya 19 km · Kebomas 22 km

Indonesia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$5,060
2025
Happiness
5.6 / 10
World Happiness, 2025
Safe drinking water
30%
of population, 2024
Homicide rate
0.3
per 100k, 2022
Road deaths
11.3
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 471
Religion
Muslim 87%Protestant 8%Roman Catholic 3%Hindu 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 Driyorejo (-7.3659°, 112.6219°, elevation 13 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. 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).