Eritrea in May: Weather, Crowds & What to Expect
Climate Map for May
Average temperature across Eritrea in May.
City Weather in May
| City | High | Low | Rain | UV | Feels |
|---|---|---|---|---|---|
| Asmara | 28° | 13° | 35 mm | extreme | Mild |
| Keren, Eritrea | 33° | 18° | 32 mm | extreme | Warm |
| Himora | 39° | 24° | 31 mm | extreme | Hot |
| Massawa | extreme | ||||
| Assab | 37° | 28° | 2 mm | extreme | Hot |
| Mendefera | 31° | 14° | 44 mm | extreme | Mild |
| Barentu, Eritrea | 37° | 21° | 20 mm | extreme | Hot |
High / low are average daily temperatures (°C). “Feels” reflects how hot or cold it feels, allowing for humidity.
Dahlak Archipelago (Red Sea islands)
Humidity climbs in May and the sea warms noticeably; diving remains excellent but small charter boats sometimes run shorter routes when afternoon winds freshen. This is the time when long snorkeling swims feel considerably hotter and shade is scarce on smaller islands - a sunshade or sailcloth on day trips is very useful. Booking ahead for boats straight after Ramadan (if it falls here) can be wise in busy years.
Red Sea Coast (Massawa, Assab and coastal plains)
May sees real heat sharpen along the coast and the combination of humidity and sunshine feels oppressive by midday in places like Massawa and along the coastal highway. This is not the best month for extensive walking; instead take early-morning boat trips or stay shaded in waterfront cafés. Expect fewer foreign tourists, so accommodation is inexpensive but basic facilities can be limited.
Central Highlands (Asmara, Keren, Mendefera, high plateau)
May brings the first regular cloud buildup and the foothills start to see short, sharp showers - a relief after the dry months that also stirs green growth across terraces. Trails become muddier and some steep tracks get slippery, so trekking requires better footwear; waterfalls begin to pick up but are not yet at their peak. Consider packing a light rain jacket and quick-dry clothes for outdoor plans.
Gash-Barka and Western Lowlands (Barentu, Teseney, agricultural plains)
May sees pre-monsoon humidity and heat build; the landscape feels furnace-like by afternoon and occasional dust storms can reduce visibility on rural roads. This month is often considered the worst for lengthy overland journeys through the western plains - if you must travel, schedule driving for early morning and ensure a well-maintained vehicle. Accommodation in towns is basic; pack electrolyte tablets and sun protection.
Southern/Southeastern Lowlands and Danakil-facing desert
May is typically one of the hottest months in the Danakil-facing lowlands, with strong sun and little to no relief during the day; salt plains and low-lying basins radiate heat and temperatures can spike. This month is not recommended for casual travel - only experienced desert convoys with ample water and emergency plans should venture far from main towns. Prepare for dust, blazing sun, and minimal shade.