Humidity increases in May as the rainy season approaches; afternoon showers become more likely late in the month. Cultural events and festivals are common, especially in Saint-Louis and Dakar. Road travel is still generally reliable before the heavy rains set in.
Arensond CC BY-SA 4.0 Wikimedia Commons
Average daily low and high (°C) and monthly rainfall. The badge shows how it feels, allowing for humidity.
Average temperature across Senegal in May.
Upper Senegal River
The first thunderheads sometimes arrive by May, especially in more easterly parts of this region, but most of the area remains largely dry until June. Temperatures are at their pre‑monsoon peak with humid spikes in brief showers; the landscape begins to look less parched as isolated storms pop up. Travelers will notice more mosquitoes as ephemeral pools appear-carry repellent and expect occasional dirt‑road washouts after intense showers.
Atlantic coast and urban zone
May begins a transition: humidity rises and isolated coastal showers become more frequent, especially late in the month, but widespread rains are uncommon yet. Ocean temperatures climb and the surf can pick up, drawing local surfers; ferry crossings remain reliable. Travelers should keep a light rain jacket handy and expect fewer crowds at inland attractions compared with the peak winter months.
Joal, Mbour, Saloum mangroves
May brings the first significant showers to the southern Saloum earlier than the central coast, and the landscape starts to green-mangrove creeks swell and mosquitoes increase. Boat travel remains the best way to explore the delta after heavy rains as some tracks can become squishy; pack repellent and lightweight waterproofs. It’s a transitional month with fewer tourists and dramatic skies ideal for photography.
Kaolack, Fatick, agricultural belt
May signals the approach of the rains and the first strong thunderstorms sometimes roll in from the south, bringing dramatic cloudscapes to the Kaolack plains. Farmers begin planting and the region smells of dampening earth when a shower arrives; mosquitoes increase in number with standing water. Travelers will find lower accommodation demand and should have waterproof gear for sporadic storms and possible road softening.
Tambacounda, Kédougou, Niokolo‑Koba
May marks the first meaningful rains in the east-showers become regular and waterfalls fed by the Fouladou and Gambia headwaters swell, creating dramatic cascades near Kédougou. Vegetation green‑up is rapid and insects surge, so insect repellent and quick‑dry clothing are essential. Some secondary tracks start to soften, so 4x4 transport is advisable for deeper excursions toward Niokolo‑Koba.
May typically begins the long Casamance rainy season, earlier than in the north-heavy, frequent rains transform the landscape and swell the Casamance River. Travel by road becomes more challenging as secondary tracks turn to mud, but rivers and creeks become lively and boat transport often becomes the most reliable option. Pack waterproof gear, insect repellent, and accept slower, more adventurous travel rhythms.
An international jazz festival typically held in Saint-Louis in May, drawing musicians and audiences from the region and beyond.
See how May compares with the rest of the year, then read the full guide.