South Asia in May: Weather, Crowds & What to Expect

Northwestern Drylands (Pakistan, Punjab & Rajasthan, Gujarat)

May is the peak pre-monsoon furnace for this region-daytime temperatures commonly exceed 40°C in interior Rajasthan and the plains of Punjab, with Karachi and Gujarat also growing oppressively hot. Occasional severe heat waves raise health risks and airports or rail services sometimes face delays during high temperatures. Travelers should schedule outdoor activities early, carry electrolyte drinks, and be cautious about long road journeys in daytime heat. Coastal areas such as Kutch offer slightly more breeze but still stay very warm.

The Indo‑Gangetic Plain & Bengal Coast (Delhi, Uttar Pradesh, Bihar, West Bengal, Bangladesh)

Late-May and early-June are the crest of pre-monsoon heat and often the start of intense storms: Delhi and the central plains experience heat waves and sudden, sometimes violent, thunderstorms with dust. The Bay of Bengal begins to warm, creating the conditions for cyclonic disturbances during pre- and post-monsoon windows. Travelers should monitor weather advisories, avoid mid-day sightseeing, and be flexible-transport can be delayed by sudden storms or flooding in low-lying areas.

Nepal & Bhutan (Himalayan lowlands to high passes)

May brings late‑spring warmth to valleys while the monsoon edge creeps toward the lower hills: trekker numbers are still high but afternoon clouds and occasional pre-monsoon showers begin to appear. In Bhutan and lower Nepal the first heavy rains usually arrive towards month-end, making higher trails slick and river levels rise. For travelers, earlier parts of May are good for touring; if you plan high passes later keep track of weather updates and road conditions. Bug protection becomes more necessary in lower humid zones.

Northeast India & the Eastern Himalaya (Assam, Meghalaya, Sikkim, Arunachal, Nagaland, Manipur, Mizoram)

May is the cusp of the monsoon: the first heavy rains may fall across Assam and the foothills, while Meghalaya and areas around Cherrapunji and Mawsynram begin to see very intense rainfall. River levels rise quickly and some low-lying roads can start to flood in heavy spells. Tourists will find fewer crowds and lush scenery but must plan for delays and occasional diversions; hill destinations remain more reliable than the plains. Waterproof gear and flexible travel timings are essential.

Peninsular India & the Western Ghats plus Sri Lanka (Kerala, Tamil Nadu, Karnataka, Goa, Andhra, Telangana, Sri Lanka)

May often delivers the region’s hottest pre-monsoon spell and rising humidity: beaches can be warm but are still swim-friendly; inland cities become uncomfortable in mid-day heat. The southwest monsoon usually hits Kerala early in June, so May is the last full month of dry, hot conditions-book accordingly. This is a slower tourist shoulder-window for some interior circuits with lower rates, but bring sun protection and plan water-heavy activities in the cooler hours. Sri Lanka’s southwest begins to feel humid.

Maldives & Lakshadweep (Indian Ocean atolls)

May marks the beginning of the wetter season for much of the Indian Ocean: showers are more frequent and winds strengthen, affecting some inter-island transfers and surf conditions. Resorts often lower rates and run monsoon-season packages-this can be a cost-effective time to visit if you accept occasional rain. Diving is possible but visibility and currents can be variable; travelling flexibility is essential. Pack a light rain jacket and sea-sickness remedies for choppy boat rides.