Plizio Visual Lab

Wadi Siham

Plizio editorial teamUpdated: Jun 2026Data Sources

River

Weather…

Wadi Siham is one of the largest and most hydrographically important wadis in western Yemen, connecting the central highlands with the Tihama coastal plain. It originates in the rugged mountains southwest of the capital Sana'a and flows westward towards the Red Sea. Along its path, it carves through deep gorges and wide valleys, passing numerous settlements that depend on its seasonal water flow. Water management in Wadi Siham is highly developed, with modern dams and traditional channels used to harness surface water for the large-scale cultivation of sorghum, maize, and various fruits. Especially in the Tihama plain, the wadi serves as the lifeline for local agriculture and contributes to groundwater recharge in this extremely arid region. Ecologically, the wadi provides habitats for diverse plant species and acts as a corridor for wildlife. Despite challenges from soil erosion and excessive water extraction, Wadi Siham remains a central factor for regional food security and the economic development of western Yemen.

Location: Yemen
Nearby: Bajil (25 km)

Best time to visit & climate

The most pleasant time to visit is Jan, Feb, Dec.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg °C	26	26	28	31	32	33	33	32	33	31	28	26
Rain mm	2	2	5	15	18	24	56	70	44	45	4	8

📋 Practical info

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Getting there

Access to Wadi Siham is typically via tracks from the cities of the Tihama plain or from the western mountain regions, with the journey often involving unpaved paths along the river course.

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Best season

The cooler months between November and February are considered the best time to visit, allowing visitors to experience the acacia forests and traditional farming under moderate temperatures.

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Terrain & paths

The terrain consists of a blend of sandy plains and rocky mountain foothills, with the river course often lined by dense vegetation and acacia trees, which can slow progress through the valley.

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What to bring

Robust hiking boots, adequate sun protection, and a well-stocked first-aid kit are necessary, as the region is remote and medical facilities may not be immediately available.

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Parking

Vehicles are typically left near traditional farms or in wider sections of the tracks, always ensuring that agricultural activities of the local residents are not obstructed.

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Safety

In addition to the threat of flash floods after rainfall in the mountains, travelers should remain aware of the current regional security situation and seek local advice on navigable routes.

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Time needed

A visit typically requires 4 to 7 hours due to the long travel distances involved, providing a glimpse into the landscape and traditional settlement patterns along the wadi.

Geography

Coordinates

14.73330, 43.15000

Facts

The headwater region is situated at an altitude of nearly 3,000 meters above sea level.
The wadi has a total length of approximately 150 to 170 kilometers.
A modern dam in Wadi Siham was completed in 2005 for flash flood control.
The wadi's catchment area covers more than 2,500 square kilometers.
In the Tihama coastal plain, the wadi forms a wide alluvial delta.
The river only reaches the Red Sea during exceptionally heavy rainfall events.

Explore nearby

Notable places around

Tihama Plain8 km · SEExplore →

Al Hudaydah23 km · SExplore →

Bajil25 km · NEExplore →

Bayt al-Faqih26 km · NWExplore →

Port of Hodeidah26 km · SExplore →

Tihama Banana Plantations30 km · WExplore →

Bajil Cement Factory30 km · NEExplore →

Jabal Bura33 km · NEExplore →

Route planner — Car & Motorhome

Where do you start? We build the route here, with stops and country notes along the way.

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Overnight stops

Vehicle

Only stops with (optional): 💧 Water ♻️ Disposal 🔌 Power 🚻 Toilets 🚿 Shower

Sights nearby

Frequently asked questions

Is Wadi Siham suitable for hiking?

Yes, but you must be well-prepared.

What is the landscape like?

A varied mix of desert and oases.

Can you camp there?

Camping is possible in remote areas.

Is there mobile coverage?

Only sporadically in the valleys.

What should you bring?

Plenty of water and sun protection are essential.

Wadi Siham: where is it located?

Wadi Siham is located in Yemen.

Wadi Siham: when is the best time to visit?

The most pleasant time to visit is Jan, Feb, Dec.

Wadi Siham: why is it worth visiting?

Wadi Siham is one of the largest and most hydrographically important wadis in western Yemen, connecting the central highlands with the Tihama coastal plain.

View on map → The Top 50 Attractions → OpenStreetMap →