Oman
Oman in September: weather, sea & travel advice
This month's data profile
Heat shapes the decision
Oman in September is climatically mixed. The average daily high is around 37 °C, and the sea is about 30 °C. With about 1 rainy day it is very dry.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
59/100 · #8
Warmth
#5
Dryness
#1
Sun
#6
Sea warmth
#4
Published best categories: none
Oman · SeptemberPhoto: fran001 · CC BY 2.0Climate facts
- Average high
- 37 °C
- Average low
- 27 °C
- Sea
- 30 °C
- Rainy days (est.)
- 1 rainy day (est.)
- Sun (est.)
- 8 h/day
- Humidity
- 40 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| August | 39 | 29 | 3 | 79 | 8.0 | 42 | 2.3 | 31 | 57 |
| September (selected) | 37 | 27 | 1 | 5 | 7.8 | 40 | 2.3 | 30 | 59 |
| October | 35 | 24 | 1 | 8 | 7.0 | 42 | 2.2 | 30 | 65 |
How do the previous and next months compare?
Baseline: September (59/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| August | -2 | +1.4 °C | +2.3 °C | +1.6 | +74.2 mm | +0.2 h | +1.2 % | ±0 m/s | +0.4 °C |
| October | +6 | -3 °C | -2.9 °C | +0.2 | +2.9 mm | -0.8 h | +1.4 % | ±0 m/s | -0.4 °C |
All twelve months in context

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Useful next decisions
Frequently asked questions
How warm is Oman in September?
The average daily high is around 37 °C, with an average daily low of about 27 °C.
Can you swim in Oman in September?
The sea is about 30 °C (very warm).
Does it rain a lot in Oman in September?
The curated estimate is about 1 rainy day per month, not a directly measured long-term average. Total precipitation averages around 5 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Oman?
By the climate score, January, February, March and December are the strongest months for Oman. For a beach trip: January, February, March and December. September is not among them.