Hottest (avg)
#5 / 12
Sits around the middle of the year.
September in context
How it compares to the rest of the year in Muscat.
Wettest (avg)
#12 / 12
One of the drier months.
Daylight Hours
#6 / 12
Around the yearly average.
Windiest (avg)
#11 / 12
Usually calmer than most months.
Highest UV
#6 / 12
Near the middle of the yearly UV range.
Most Humid
#6 / 12
Humidity stays close to the yearly norm.
Monthly climate breakdown
A detailed look at the typical climate conditions for September.
Thermal profile
Temperature
Typical daytime high
- Nighttime low
-
- Feels like (avg)
-
Light window
Sunshine
12.3 h
Average daylight
- UV index (max)
- 9
- Typical sun hours
- 05:52 - 18:09
Wet-day pattern
Rain & Snow
Typical rainfall
- Rainy days
- 0 days
- Cloud cover (avg)
- 11%
Air feel
Humidity & Wind
55%
Average humidity
- Wind (avg)
-
- Wind (max gusts)
-
Historical daily baseline
Daily climate explorer
Pick a day to inspect the usual conditions through September in Muscat. Based on a 30-year historical climate baseline, not a forecast.
Primary control
Select a day
Scroll to compare daily conditions. The summary updates with your selection.
Secondary context
Monthly trend
Median daytime highs across the month, with a softer low line.
Median temperatureMedian lowTypical range
Day 15 selected for September. Temperature 35.5°C.
Historical disruption baseline
Typical disruptions in September
Based on 30 years of historical data, these are the disruption patterns most likely to affect plans in September.
Heat High impact
Hot feels-like days Measures: Hot feels-like days (>=32C). Observed about 100% of days (30.0 days/month) in September. Historical risk signal only, not a day-by-day forecast.
Likely frequency
30.0 days / month
- Share of days
- ~100% of days
- Upper edge
- Up to ~41°C (P95)
Why this matters
Feels-like heat >=32C is possible on ~30 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Heat High impact
Hot days Measures: Hot days (>=30C). Observed about 100% of days (30.0 days/month) in September. Historical risk signal only, not a day-by-day forecast.
Likely frequency
30.0 days / month
- Share of days
- ~100% of days
- Upper edge
- Up to ~38°C (P95)
Why this matters
Hot days are possible on ~30 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Heat High impact
Very hot feels-like Measures: Very hot feels-like days (>=35C). Observed about 99% of days (29.7 days/month) in September. Historical risk signal only, not a day-by-day forecast.
Likely frequency
29.7 days / month
- Share of days
- ~99% of days
- Upper edge
- Up to ~41°C (P95)
Why this matters
Very hot feels-like conditions are possible on ~30 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Heat High impact
Heat stress risk Measures: High heat stress days. Observed about 85% of days (25.4 days/month) in September. Historical risk signal only, not a day-by-day forecast.
Likely frequency
25.4 days / month
- Share of days
- ~85% of days
- Upper edge
- Up to ~41°C (P95)
Why this matters
Heat stress is possible on ~25 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Humidity High impact
Muggy days Measures: Muggy days (dew point >=20C). Observed about 68% of days (20.3 days/month) in September. Historical risk signal only, not a day-by-day forecast.
Likely frequency
20.3 days / month
- Share of days
- ~68% of days
- Upper edge
- Up to ~24°C (P95)
Why this matters
Muggy conditions are possible on ~20 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Heat High impact
Very hot days Measures: Very hot days (>=35C). Observed about 50% of days (14.9 days/month) in September. Historical risk signal only, not a day-by-day forecast.
Likely frequency
14.9 days / month
- Share of days
- ~50% of days
- Upper edge
- Up to ~38°C (P95)
Why this matters
Very hot days are possible on ~15 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Show all disruptions (9 more)
Humidity Moderate
Oppressive humidity Measures: Oppressive humidity days (dew point >=24C). Observed about 4% of days (1.2 days/month) in September. Historical risk signal only, not a day-by-day forecast.
Likely frequency
1.2 days / month
- Share of days
- ~4% of days
- Upper edge
- Up to ~25°C (P95)
Why this matters
Oppressive humidity is possible on ~1 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Heat Moderate
Heatwave run Measures: Heatwave runs (>=3 hot days). Observed about 1.0 days/month in September. Historical risk signal only, not a day-by-day forecast.
Likely frequency
1.0 days / month
- Share of days
- —
- Upper edge
- Up to ~37°C (P95)
Why this matters
Heatwave runs are possible on ~1 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Heat Moderate
Feels-like heatwave Measures: Feels-like heatwave runs (>=3 days). Observed about 1.0 days/month in September. Historical risk signal only, not a day-by-day forecast.
Likely frequency
1.0 days / month
- Share of days
- —
- Upper edge
- Up to ~42°C (P95)
Why this matters
Feels-like heatwave runs are possible on ~1 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Heat Minor
Warm nights Measures: Warm nights (min >=22C). Observed about 100% of days (29.9 days/month) in September. Historical risk signal only, not a day-by-day forecast.
Likely frequency
29.9 days / month
- Share of days
- ~100% of days
- Upper edge
- Up to ~30°C (P95)
Why this matters
Warm nights are possible on ~30 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Heat Minor
Hot nights Measures: Hot nights (min >=25C). Observed about 92% of days (27.6 days/month) in September. Historical risk signal only, not a day-by-day forecast.
Likely frequency
27.6 days / month
- Share of days
- ~92% of days
- Upper edge
- Up to ~30°C (P95)
Why this matters
Hot nights are possible on ~28 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Humidity Minor
Humid days Measures: Humid days (dew point >=18C). Observed about 85% of days (25.5 days/month) in September. Historical risk signal only, not a day-by-day forecast.
Likely frequency
25.5 days / month
- Share of days
- ~85% of days
- Upper edge
- Up to ~24°C (P95)
Why this matters
Humid conditions are possible on ~25 days. Comfort and pace can drop quickly, so plan shorter outdoor blocks with air-conditioned backup stops.
Wind Minor
Gusty days Measures: Gusty days (>=40 km/h). Observed about 6% of days (1.8 days/month) in September. Historical risk signal only, not a day-by-day forecast.
Likely frequency
1.8 days / month
- Share of days
- ~6% of days
- Upper edge
- Up to ~47km/h (P95)
Why this matters
Gusty conditions are possible on ~2 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Cloud Minor
Cloudy days Measures: Cloudy days (cloud cover >=60%). Observed about 4% of days (1.2 days/month) in September. Historical risk signal only, not a day-by-day forecast.
Likely frequency
1.2 days / month
- Share of days
- ~4% of days
- Upper edge
- Up to ~86% (P95)
Why this matters
Cloudy skies are possible on ~1 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Cloud Minor
Mostly cloudy days Measures: Mostly cloudy days (cloud cover >=80%). Observed about 1% of days (0.3 days/month) in September. Historical risk signal only, not a day-by-day forecast.
Likely frequency
0.3 days / month
- Share of days
- ~1% of days
- Upper edge
- Up to ~95% (P95)
Why this matters
Mostly cloudy skies are possible on ~0 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Travel planning FAQ
Frequently asked questions
Quick answers to the weather questions you ask the most.
Is September a good time to visit Muscat?
Typical September days in Muscat reach highs of 35°C (95°F) with nights around 27°C (81°F). It usually feels very hot by day and warm after dark. It is one of the drier months, which suits outdoor exploring and sightseeing.
What are temperatures like in September?
In September, you can usually expect highs of 35°C (95°F) and lows near 27°C (81°F). That means very hot days and warm nights, so pack layers you can add or remove.
How much does it rain in September?
Rainfall in September averages 0 mm (0.00 in) across roughly 0 days. Overall it is a mostly dry time of year, so showers are usually brief rather than all-day downpours.
How many hours of daylight are there in September?
You can expect about 12 hours of daylight in September. Sunrise is typically around 05:52 and sunset near 18:09. Daylight is fairly typical, with enough time for sightseeing.
How strong is the sun in September?
UV levels frequently reach very high levels (around 9), so strong sun protection is essential, especially around midday.
Is it windy in September?
In September, average wind speeds are around 8 km/h (5 mph), with gusts on the windiest days reaching about 38 km/h (24 mph). On the ground, it is a gentle to moderate breeze is common, but stronger winds are not frequent.