Avg High
Muscat in September
Avg Low
Rain
Daylight
12h
What to expect
In Muscat, September sits in early autumn, a shoulder-season month where the feel can shift as the season turns. Most afternoons run very hot in direct sun, with evenings that ease back comfortably. Comfort is usually predictable, so a standard day plan works well. Daylight is moderate, so steady pacing works well.
September in context
How it compares to the rest of the year in Muscat.
Hottest (avg)
#5 / 12
Wettest (avg)
#12 / 12
Daylight Hours
#6 / 12
Windiest (avg)
#11 / 12
Highest UV
#6 / 12
Most Humid
#6 / 12
Monthly climate breakdown
Temperature
- Daytime high
-
- Nighttime low
-
- Feels like (avg)
-
Sunshine
- Daylight hours
- 12.3 h
- UV index (max)
- 9
- Typical sun hours
- 05:52 - 18:09
Rain & Snow
- Total rain
-
- Rainy days
- 0 days
- Cloud cover (avg)
- 11%
Humidity & Wind
- Humidity (avg)
- 55%
- Wind (avg)
-
- Wind (max gusts)
-
Daily climate explorer
Day 15 selected for September. Typical high 35.5°C and low 27.1°C.
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.
30.0 days / month
~100% of days
Why this matters
- Expected days 30.0 days / month
- Probability ~100% of days
- Intensity Up to ~41°C (P95)
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.
30.0 days / month
~100% of days
Why this matters
- Expected days 30.0 days / month
- Probability ~100% of days
- Intensity Up to ~38°C (P95)
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.
29.7 days / month
~99% of days
Why this matters
- Expected days 29.7 days / month
- Probability ~99% of days
- Intensity Up to ~41°C (P95)
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.
25.4 days / month
~85% of days
Why this matters
- Expected days 25.4 days / month
- Probability ~85% of days
- Intensity Up to ~41°C (P95)
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.
20.3 days / month
~68% of days
Why this matters
- Expected days 20.3 days / month
- Probability ~68% of days
- Intensity Up to ~24°C (P95)
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.
14.9 days / month
~50% of days
Why this matters
- Expected days 14.9 days / month
- Probability ~50% of days
- Intensity Up to ~38°C (P95)
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.
1.2 days / month
~4% of days
Why this matters
- Expected days 1.2 days / month
- Probability ~4% of days
- Intensity Up to ~25°C (P95)
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.
1.0 days / month
Probability unavailable
Why this matters
- Expected days 1.0 days / month
- Probability —
- Intensity Up to ~37°C (P95)
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.
1.0 days / month
Probability unavailable
Why this matters
- Expected days 1.0 days / month
- Probability —
- Intensity Up to ~42°C (P95)
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.
29.9 days / month
~100% of days
Why this matters
- Expected days 29.9 days / month
- Probability ~100% of days
- Intensity Up to ~30°C (P95)
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.
27.6 days / month
~92% of days
Why this matters
- Expected days 27.6 days / month
- Probability ~92% of days
- Intensity Up to ~30°C (P95)
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.
25.5 days / month
~85% of days
Why this matters
- Expected days 25.5 days / month
- Probability ~85% of days
- Intensity Up to ~24°C (P95)
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.
1.8 days / month
~6% of days
Why this matters
- Expected days 1.8 days / month
- Probability ~6% of days
- Intensity Up to ~47km/h (P95)
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.
1.2 days / month
~4% of days
Why this matters
- Expected days 1.2 days / month
- Probability ~4% of days
- Intensity Up to ~86% (P95)
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.
0.3 days / month
~1% of days
Why this matters
- Expected days 0.3 days / month
- Probability ~1% of days
- Intensity Up to ~95% (P95)
Mostly cloudy skies are possible on ~0 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Frequently asked questions
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.