Sayyān in Fall
In fall (September, October and November), Sayyān sees average daytime highs around 24°C and overnight lows near 11°C, with 36 mm of rain over about 8 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 26°C in early September to 22°C by late November. The sky is clear or mostly clear about 66% of the time across fall, and the air most often feels dry.
Fall is Sayyān's 2nd-best season to visit on our travel score. For the whole year in context, see Sayyān's year-round climate.
- Avg daytime high
- 24°C
- 3rd-warmest season
- Avg overnight low
- 11°C
- Rainfall
- 36 mm
- 8 wet days
- Avg wind
- 8 km/h
- Travel score
- 8.5
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Sayyān in Fall
Over the season highs ease from about 26°C in early September to 22°C by late November.
A typical fall day in Sayyān reaches about 24°C and drops to 11°C overnight. The warmest of the three months is September, the coolest November.
Sayyān weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 22° / 8° | 6 | 1.6 | 11.2 | 8.6 |
| Feb | 23° / 10° | 6 | 1.6 | 11.5 | 8.9 |
| Mar | 24° / 12° | 21 | 5.4 | 11.9 | 8.3 |
| Apr | 25° / 13° | 44 | 8.3 | 12.3 | 7.5 |
| May | 26° / 15° | 41 | 8.1 | 12.7 | 7.1 |
| Jun | 28° / 16° | 17 | 5 | 12.9 | 7.2 |
| Jul | 26° / 16° | 58 | 13.2 | 12.8 | 6.0 |
| Aug | 26° / 15° | 112 | 22.1 | 12.5 | 5.0 |
| Sep | 26° / 14° | 22 | 6.1 | 12.1 | 7.5 |
| Oct | 24° / 11° | 10 | 1.1 | 11.7 | 9.1 |
| Nov | 22° / 9° | 4 | 1 | 11.3 | 8.9 |
| Dec | 22° / 8° | 3 | 0.8 | 11.1 | 8.8 |
Cloud cover in Fall
The sky is clear or mostly clear about 66% of the time across fall.
Chance of precipitation in Fall
Sayyān gets around 36 mm of rain over 8 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 8 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 18 min in early September to 11 h 12 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 6.3 kWh/m².
Hazard calendar for Sayyān
None of Sayyān's seasonal hazards peak in fall. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Sayyān sees seasonal dust haze (June–August), heaviest in July.
Is fall a good time to visit Sayyān?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is one of the better times to visit Sayyān for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Sayyān in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Sayyān sees daytime highs around 24°C and nights near 11°C. Pack sun protection. Worth having: light clothes. About 8 days see rain.
UV index in Sayyān in Fall
Clear-sky midday UV across fall averages around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Sayyān peaks around April 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 at about 9 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 11 | 13 | 15 | 16 | 13 | 12 | 11 | 13 | 13 | 12 | 10 | 9 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 11 | Extreme |
| Feb | 13 | Extreme |
| Mar | 15 | Extreme |
| Apr | 16 | Extreme |
| May | 13 | Extreme |
| Jun | 12 | Extreme |
| Jul | 11 | Extreme |
| Aug | 13 | Extreme |
| Sep | 13 | Extreme |
| Oct | 12 | Extreme |
| Nov | 10 | Very high |
| Dec | 9 | Very high |
Air quality in Sayyān in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Sayyān is worst in July — around 48 µg/m³ PM2.5 (poor), about 2.0× the cleanest month (November, 24 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 29 | 38 | 37 | 40 | 40 | 43 | 48 | 41 | 35 | 27 | 24 | 24 |
| Level | Moderate | Poor | Poor | Poor | Poor | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 29 | Moderate |
| Feb | 38 | Poor |
| Mar | 37 | Poor |
| Apr | 40 | Poor |
| May | 40 | Poor |
| Jun | 43 | Poor |
| Jul | 48 | Poor |
| Aug | 41 | Poor |
| Sep | 35 | Moderate |
| Oct | 27 | Moderate |
| Nov | 24 | Moderate |
| Dec | 24 | Moderate |
Where is Sayyān?
Sayyān sits at 15.2°N, 44.3°E, 2,482 m above sea level, in Yemen. The nearest listed city is Saḩar, 16 km away.
Topography around Sayyān
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sayyān.
Within 3 km, the terrain around Sayyān has significant variations in elevation — a maximum elevation change of 304 m around an average of 2,493 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,408 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,066 m.
The land around Sayyān is covered by bare terrain (43%) and cropland (34%) within 3 km, bare terrain (44%) and cropland (29%) within 16 km, and bare terrain (51%) within 80 km.
Yemen travel facts
- Travel advisory
- Level 4
- Do Not Travel
- Power plugs
- Type A / D / G
- 240 V · 50 Hz
- Prices
- ≈ 7% of US
- price level, 2013
- GDP per capita
- $634
- 2018
- Happiness
- 3.5 / 10
- World Happiness, 2025
- Homicide rate
- 5.8
- per 100k, 2013
- Road deaths
- 29.4
- per 100k/yr, 2019
- Income group
- Low
- World Bank
- English
- Very low
- EF EPI 402
- Religion
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 Sayyān (15.1718°, 44.3244°, elevation 2,482 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.