Adam weather in September

In September, Adam sees average daytime highs of 40°C and overnight lows near 26°C, with 0 mm of rain across 0.1 wet days and about 12.1 hours of daylight. It is the 5th-warmest and 12th-wettest month of the year here.

Highs ease over the month, from about 40°C in the first days to 39°C by the end. The sky is clear or mostly clear about 88% of the time in September, and the air most often feels humid.

Daylight stretches from about 12 h 30 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Adam's 4th-clearest and 7th-windiest month. For the whole year in context, see Adam's year-round climate.

Daytime high
40°
5th warmest
Overnight low
26°
8th coldest
Rainfall
0 mm
0.1 wet days
Daylight
12 h 06 min
6:00 AM – 6:08 PM
Cloud cover
16%
4th clearest
Wind
10 km/h
7th windiest
Solar energy
6.26 kWh/m²
Travel score
0.3
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 40°C in the first days to 39°C by the end.

A typical September day in Adam reaches about 40°C in the afternoon and slips back to 26°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 37°C and 42°C. Set against its neighbours, September runs about 2°C cooler than August and about 3°C warmer than October.

20°25°30°35°40°45°151015202530
Avg high (°C)Avg low (°C)
14026
24026
34026
44026
54026
64026
74026
84026
94026
104026
114026
124026
134026
144026
154026
164026
174026
184025
193925
203925
213925
223925
233925
243925
253925
263925
273925
283925
293925
303925

How September really feels in Adam

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
24 feel dangerously hot (≥ 39°C)
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.

Adam weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 14°30.810.88.7
Feb29° / 16°30.511.27.3
Mar33° / 19°151.411.84.7
Apr37° / 24°50.912.51.8
May42° / 28°10.213.10.0
Jun43° / 29°20.413.30.0
Jul43° / 29°70.813.20.0
Aug41° / 28°30.612.80.0
Sep40° / 26°00.112.10.3
Oct37° / 23°10.211.52.3
Nov32° / 19°50.510.95.5
Dec28° / 16°60.410.77.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 88% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 6% of September, with mostly cloudy or overcast conditions the remaining 6%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18911
28911
39010
4919
5919
6919
7928
8928
9928
10937
11937
12946
13946
14955
15955
16955
17955
18955
19964
20964
21964
22973
23973
24973
25982
26982
27982
28982
29982
30982

Chance of precipitation in September

Any precipitation

Adam gets around 0 mm of rain over 0.1 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 0% and peaks near 1% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
11
21
31
41
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300

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 36% of days. Sticky, muggy-or-worse air turns up on roughly 26% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
141441383
241541373
351542362
451642352
551742341
651842341
761942331
861941331
972040321
1072140311
1182239311
1292338300
13102337290
14112436280
15132435270
16142535260
17162534250
18172533240
19192533230
20212532210
21232532200
22242532190
23262531180
24272531160
25292431150
26312431150
27322330140
28342330130
29362229131
30372128121

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 30 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over September. Sunrise moves from 5:56 AM to 6:05 AM, and sunset from 6:23 PM to 5:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:566:23
212.45:566:22
312.45:576:21
412.45:576:20
512.45:576:19
612.35:576:18
712.35:586:17
812.35:586:16
912.35:586:15
1012.35:596:14
1112.25:596:13
1212.25:596:12
1312.26:006:11
1412.26:006:10
1512.16:006:09
1612.16:006:08
1712.16:016:07
1812.16:016:06
1912.16:016:05
2012.06:026:04
2112.06:026:03
2212.06:026:02
2312.06:026:01
2412.06:036:00
2511.96:035:59
2611.96:035:58
2711.96:045:57
2811.96:045:56
2911.86:045:55
3011.86:055:54

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.26 kWh/m².

For context, solar energy here swings from a low near 4.62 kWh/m² to a high of 7.6 kWh/m² in May across the year — September's 6.26 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.3Intense
136.3Intense
146.3Intense
156.3Intense
166.3Intense
176.3Intense
186.3Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.1Intense
306.1Intense
Planning a trip in September

Hazard calendar for Adam

In seasonPeak

In September, Adam sits inside its dust season. The full year is below, with each hazard's peak months called out.

Adam sees seasonal dust haze (March–September), heaviest in July.

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

Is September a good time to visit Adam?

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

0.3
Sightseeing
8th-best month of the year
3.6
Beach & pool
8th-best month of the year

September is a weaker month for outdoor sightseeing in Adam.

What to pack for Adam in September

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

In September, Adam sees daytime highs around 40°C and nights near 26°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Adam 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 Adam peaks around April 21 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highExtremeVery highHighApr 21UV 12Dec 15UV 6
UV index (midday)Level
Jan7Very high
Feb9Very high
Mar10Very high
Apr12Extreme
May12Extreme
Jun11Extreme
Jul9Very high
Aug9Very high
Sep11Extreme
Oct9Very high
Nov7High
Dec6High

Air quality in Adam 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 Adam is worst in July — around 113 µg/m³ PM2.5 (unhealthy), about 4.2× the cleanest month (December, 27 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyPoorModerateJul 18110 µg/m³Dec 1227 µg/m³
PM2.5 (µg/m³)Level
Jan32Moderate
Feb37Poor
Mar42Poor
Apr56Unhealthy
May67Unhealthy
Jun81Unhealthy
Jul113Unhealthy
Aug94Unhealthy
Sep60Unhealthy
Oct36Poor
Nov28Moderate
Dec27Moderate
Location & terrain

Where is Adam?

Adam sits at 22.4°N, 57.5°E, 284 m above sea level, in Oman. The nearest listed city is Nizwa, 62 km away.

NizwaIzkīBahlaIbraSamā’ilRustaqSufālat Samā’ilBidbid

Topography around Adam

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

Within 3 km, the terrain around Adam has only modest variations in elevation — a maximum elevation change of 190 m around an average of 290 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 799 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,173 m.

The land around Adam is covered by bare terrain (75%) within 3 km, bare terrain (98%) within 16 km, and bare terrain (99%) within 80 km.

3 km
190 m
16 km
799 m
80 km
2,173 m
treescroplandartificial surfacesbare terrain
September weather nearby: Nizwa 62 km · Izkī 66 km · Bahla 70 km · Ibra 109 km · Samā’il 111 km · Rustaq 113 km · Sufālat Samā’il 116 km · Bidbid 130 km

Oman travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type G
240 V · 50 Hz
Prices
≈ 47% of US
price level, 2025
GDP per capita
$19,947
2025
Happiness
6.2 / 10
World Happiness, 2025
Safe drinking water
91%
of population, 2024
Homicide rate
0.1
per 100k, 2023
Road deaths
10.6
per 100k/yr, 2019
Income group
High
World Bank
English
Very low
EF EPI 407
Religion
Muslim 86%Christian 6%Hindu 6%other and unaffiliated 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 Adam (22.3793°, 57.5272°, elevation 284 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).