Weather in Patna in April

The month to avoid. Of the twelve, April is the one to avoid. Daytime highs average 40.7 °C and the afternoon is not negotiable — outdoor plans move to early morning or evening.

April ranks 10 of 12 — near the bottom of Patna's year. December is the month that works, and the swing between the two is 79 points, which is a different holiday rather than a slightly better one.

Rain falls on only 3 days, so an itinerary with no wet-weather fallback is a reasonable risk. Pack for heat management rather than style: shade, water, and a schedule that gives up on the middle of the day.

What the averages hide

Averages flatten a month, and this one hides a few things: 29 days of the month clear 35 °C — that is not a heatwave, it is the month; the day swings 16.7 °C from low to high, which means one bag has to cover both. Across the twenty years measured, the hottest April day reached 46.2 °C and the coldest night fell to 17 °C.

April is moderately variable: 0 mm in the driest year against 35 mm in the wettest, around an average of 14 mm. Roughly two Aprils in three land near that average, and the third does something else entirely.

Wind is light at 7.7 km/h, so the temperature on the page is close to the temperature on your skin, and the air is dry at 26% humidity, which makes the heat far more bearable than the same figure somewhere humid — and dehydrates you faster than you expect.

How April sits in the year

Temperatures hold steady either side: 35.4 °C in March, 40.7 here, 42 in May. Nothing about the timing within the month matters much.

Daylight in April

12.7 hours of daylight, gaining 0.7 hours across the month. That is between Patna's extremes of 13.7 and 10.6 hours, so days are long enough not to constrain the plan.

An inland climate

With no coast nearby, the year swings a fair way — 33.2 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage. Within April itself the daily swing is 16.7 °C, so mornings and afternoons need different clothes.

How busy it gets

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

April in Patna versus nearby

If Patna is one option among several, the nearby comparison is worth making. Varanasi is close enough to be a coin toss — within a degree on temperature, 1 day less rain. Kathmandu is a better bet in April — 11.9 °C cooler, 4 days more rain.

So: April is a compromise. December is 68 points better and is what Patna is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Patna

See all twelve months in Patna, or where else to go in April.