Weather in Lucknow

Lucknow is in India at 26.8°N. The 2001–2020 NASA POWER daily record describes a monsoon climate with a sharp wet-dry split. June is the warmest month (average 35.6°C, high 41.3°C) and January is the coolest (average 15.6°C, low 8.0°C).

Rain is the monsoon runs from June to September, inside an annual total of 914 mm. The wettest month is July at 283 mm; the driest is November at 4 mm. On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are February, November, and December.

Hot and cool months in Lucknow

The heat peaks in June, when the typical afternoon is 41.3°C. The opposite pole is January, when mornings average 8.0°C.

Across the year the mean afternoon high is 32.9°C. If you want the smallest day–night shock, look at months where the high and low sit close together; June nights still hold 29.9°C.

Monsoon and dry months

The monsoon in Lucknow starts in June and ends in September (June, July, August, and September). July is the core of it at 283 mm. November is the other extreme, with 4 mm.

Humidity peaks near 81%. That usually lines up with the wetter months rather than the hottest ones.

What stands out month by month

The year bottoms out in January. Plan for 8.0°C at night and 23.2°C in the afternoon. In February, Lucknow averages 27.8°C by day and 11.4°C at night, with 19 mm of rain. March: 34.4°C high, 16.7°C low, 12 mm rain, 31% humidity. April stands apart from the months beside it: 40.4°C / 23.4°C and 10 mm. May brings 27 mm and 5 rainy days; temperatures run from 28.0°C to 43.0°C. June is when the monsoon typically starts in Lucknow: highs near 41.3°C, and rainfall jumps to 116 mm (12 rainy days).

July is the wettest month — 283 mm and 24 rainy days, with 72% humidity. By September the monsoon is ending. Lucknow still sees about 155 mm, but the next month is usually leaner. October: 31.6°C high, 19.6°C low, 29 mm rain, 64% humidity. November is the driest month, averaging only 4 mm across 1 rainy days. Highs sit near 28.1°C. December brings 7 mm and 1 rainy days; temperatures run from 9.5°C to 24.0°C.

When the score favours a visit

The three months with the highest comfort score are February, November, and December: February (19.6°C average, 19 mm, 42% humidity); November (21.1°C average, 4 mm, 54% humidity); December (16.8°C average, 7 mm, 50% humidity). They fall in calendar order. The score rewards averages near 22°C, lower rainfall, and humidity near 60%. It is a climate score, not a festival or price calendar.

If you want the monsoon itself — fewer crowds, greener landscape, heavier rain — aim at June–September instead of the score.

Lucknow and other cities in India

Kanpur is about 71 km away: Lucknow is about as warm as Kanpur at the hot peak and 70 mm wetter over the year than Kanpur. Kanpur’s wettest month is July (258 mm) versus July here.

Delhi is about 415 km away: Lucknow is about as warm as Delhi at the hot peak and 163 mm wetter over the year than Delhi. Delhi’s wettest month is July (217 mm) versus July here.

Jaipur is about 509 km away: Lucknow is 1.0°C warmer than Jaipur in its hottest month and 390 mm wetter over the year than Jaipur. Jaipur’s wettest month is August (172 mm) versus July here.