May signals the beginning of the wet season for much of Panama, with heavier afternoon and evening showers becoming common. Travel can still be perfectly fine but expect green landscapes and more mosquitoes in lowland areas. Some road and boat schedules in remote areas may be affected by heavy rain.
Average daily low and high (°C) and monthly rainfall. The badge shows how it feels, allowing for humidity.
Average temperature across Panama in May.
Central Lowlands
By May the wet season establishes itself - heavy, tropical afternoon and overnight rains become routine around the canal and city. Streets can flood briefly after intense storms, and visibility across the bay drops during persistent squalls; however mornings often remain usable for canal visits and museum tours. Expect muggy conditions and reduced air clarity; bring a strong insect repellent for waterfront areas and waterproof camera protection.
Including Las Perlas
May signals the start of the wet season with regular afternoon thunderstorms and shorter daylight windows along the Pacific. Stronger offshore winds and choppier seas can make island hops to Las Perlas less predictable; ferries may be canceled during heavy weather. Travel light with quick-drying clothes and waterproof bags for cameras - early-morning trips are often the most reliable.
Pedasí, Playa Venao, Tonosí
May marks the transition into the wet season; brief but intense afternoon storms become common and river crossings can swell quickly. Surf quality may improve for certain swells while some coastal day trips are curtailed by weather; whale-watching still runs but with increased chance of cancellations. Bring a waterproof daypack, expect quieter lodgings, and check local boat operators’ schedules.
Boquete, Volcán, Cerro Punta
May is the start of the wetter months with regular afternoon rains and mist that can obscure larger views of Volcán Barú. Coffee harvest activity increases and farm tours remain active, though some trails become slippery and less predictable. Pack gaiters and quick-drying layers, and schedule strenuous hikes for early morning when trails are firmer and visibility is better.
Bocas del Toro and San Blas/Guna Yala
May starts to shift toward a wetter pattern, especially in Bocas del Toro where rains become more frequent and intense at times, swelling rivers and darkening beaches. San Blas sees more afternoon showers too, and small boat transfers may be tied to weather windows. Travelers should expect quieter lodgings, more mosquitoes, and carry waterproof packs for island gear.
Darien Gap, Yaviza, Jaqué
May marks an uptick to heavy rains that make the Darién a challenging travel environment; rivers become fast and some routes impassable without experienced operators. The forest becomes saturated and boat travel schedules can be disrupted for days. Visits should be limited to well-supported expeditions with local logistics teams; bring impermeable bags for gear and accept that comfort is minimal.
There are no major festivals or events in Panama during May to be aware of.
See how May compares with the rest of the year, then read the full guide.