SeasonMapSiwa weather in September
Egypt
September in Siwa: sweltering, dry — fine if you can take 35°C afternoons.
#9 of 12 months in Siwa · #978 of 1383 destinations to visit in September · comfort 68/100 (tier C)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Siwa in September
Other months in Siwa
Siwa's forum places the best visiting window from October through April, well clear of July's peak heat. Regulars note the desert oasis cools quickly once the sun goes down, so a wind jacket or sweater for the evening is standard advice even when the day itself was warm and sunny.
Add your own note from Siwa's card on the map.
Siwa climate normals — September
| Daytime high | 35°C / 94°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 23°C / 73°F | |
| Feels like (high) | 35°C / 95°F | |
| Rainfall | 0 mm / 0 in | ☀️ dry |
| Rainy days | 0 days | |
| Humidity | 49% | 🍃 comfortable |
| Dew point | 17°C / 62°F | |
| Sunshine | 11.3 h/day | |
| Daylight | 12.3 h | |
| Wind | 19 km/h / 12 mph | |
| Air quality (US AQI) | 78 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Siwa in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusySummer holidays in Egypt, school holidays in 2 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Siwa's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherSiwa's best weather comes in March, April and November — separate windows, not one continuous season.
Best weatherFair weatherToughest weather
What's on in Siwa in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Oasis summer
15 May – 15 Sep · usuallyExtreme heatEverything happens before nine and after six, and the shaded pools and the cold springs are the whole day in between. Sand sea trips stop being a good idea altogether.
- Nature
Date harvest
20 Sep – 15 Nov · usuallySiwa's own crop, and the oasis smells of it for six weeks: palms stripped by hand, dates spread on roofs, lorries loading for Cairo on every track out of town.
Where is Siwa?
Siwa in September — FAQ
- Is September a good time to visit Siwa?
- September in Siwa: sweltering, dry — fine if you can take 35°C afternoons. It ranks #9 of 12 months for Siwa on SeasonMap's comfort score (68/100).
- What is the weather like in Siwa in September?
- In September, Siwa averages a daily high of 34.7°C and a low of 22.8°C, with about 0 mm of rain over roughly 0 rainy days.
- What is the air quality in Siwa in September?
- Siwa has a mean US Air Quality Index of about 78 in September.