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The best time to visit Port Blair is December to March, when rainfall drops below 80 mm per month, skies are clear, and the sea is calm for ferries and scuba diving. Average highs run 29°C to 31°C (84°F to 88°F). This guide breaks down every season by weather, prices, and crowds so you can pick the month that fits your budget and plans. For a full climate table, see Port Blair weather by month.
Best Time to Visit Port Blair: December to March
December to March is peak season and the most reliable window. Rainfall is low (35 to 80 mm per month), the sea is calm, and dive visibility reaches 15 to 30 metres. This is also when most travelers arrive, so flights from mainland India and hotels are at their most expensive, typically 30 to 50% above shoulder-season rates. Book flights and hotels two to three months ahead for a December or January trip. For where each area sits and who it suits, see our Port Blair neighborhoods.
Best Time to Visit Port Blair: April to May
April and May are hot, with April hitting 32°C (90°F) and humidity above 80%. April is still mostly dry (70 mm), which is why the Andaman Islands’ Beach Festival is scheduled for April. May brings the first monsoon rains. The upside is lower prices: hotel rates drop noticeably after mid-April and crowds thin out. If you tolerate heat, late April is a value pick for beach time at Corbyn’s Cove and Wandoor. ferries, costs and practical advice is covered in our Port Blair travel tips guide.
Best Time to Visit Port Blair: June to September
Avoid June to September unless you specifically want a monsoon experience or the lowest prices of the year. These four months bring 500 to 620 mm of rain each, rough seas, and frequent ferry cancellations to Havelock and Neil Island. Scuba operators largely pause operations. Hotels can drop to half their peak rates, but you may be stuck indoors for days. If you go, base yourself in Port Blair town and take short trips between rain windows. See our Port Blair travel guide for an overview of the city.
Best Time to Visit Port Blair: October to November
October and November are shoulder months. October still averages 320 mm of rain, but November drops to 210 mm with showers shifting to evenings. By mid-November the weather is mostly clear and prices are still below December peaks. November is a strong choice for combining decent weather with moderate costs. For a breakdown of what each month hosts, check the events and festivals in Port Blair calendar.
Best Time to Visit Port Blair for Diving and Snorkeling
The dive season runs December to April. Visibility peaks at 15 to 30 metres in February and March, when the water is 28°C to 29°C (82°F to 84°F) and calm. Elephant Beach and the reefs off Havelock are the top sites. Snorkeling works in the same months. Between June and September, visibility drops sharply and many dive shops close entirely. If diving is your main reason for the trip, target February or March and book things to do in Port Blair like dive trips in advance.
Best Time to Visit Port Blair for Budget Travelers
For the lowest prices, target late April, May, or September to early November. Hotel rates fall by 30 to 50% versus peak season and flights from Chennai or Kolkata are cheaper. The trade-off is rain and rough seas, which can cancel island ferries. If you are flexible and prioritize cost, aim for the last week of October to mid-November: prices are still down but the weather has mostly settled. See where to stay in Port Blair for hotels by area and budget.
