Climate Chart of Patna, India

Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023

For Patna, India, the climate data describe 2013–2023. Monthly mean temperatures range from January at 15.8 °C to June at 31.4 °C, giving a broad picture of how temperatures vary through the year. Daily rainfall and sunshine also have distinct monthly highs and lows, so visitors may want to consider their priorities when planning outdoor time. These figures summarize monthly averages; they do not describe the conditions of every individual day.

Climate overview

Temperature

Monthly mean temperature is lowest in January, at 15.8 °C, and reaches its highest monthly mean in June, at 31.4 °C. These are averages for the full month, not daytime maximum temperatures, so they should not be read as a forecast of the warmth on any particular day. The unweighted mean across the monthly means is 25.4 °C. It offers a broad year-round reference, but it is not a day-weighted annual average and does not show the daily range or short-term changes visitors may encounter.

Rain

Mean daily rainfall is highest in July, at 9.93 mm/day, and lowest in November, at 0.00 mm/day. The lowest monthly mean makes that month a conditional option for visitors prioritising lower average rainfall, while the highest is a useful prompt to prepare for rain. Neither average guarantees dry or wet days, and these daily means are not monthly totals or measures of rain frequency. The unweighted mean across monthly daily-rainfall means is 3.23 mm/day. It provides a general reference rather than a day-by-day expectation, so plans that depend on being outdoors still benefit from flexibility.

Sunshine

Mean daily sunshine reaches its highest monthly value in May, at 11.16 hours/day, and its lowest in July, at 8.09 hours/day. These figures can help visitors weigh the typical availability of sunshine for outdoor plans, but sunshine duration is not the same as day length and does not ensure clear skies on a particular day. The unweighted mean across monthly sunshine means is 9.62 hours/day per day. Treat it as a broad guide to average daily sunshine rather than a guarantee for individual sightseeing days.

Best Travel Time Guide for Patna, India: Ideal Seasons and Weather Insights

For visitors prioritising cooler monthly averages, January is the relevant option: its monthly mean temperature is 15.8 °C. This is a monthly average, not a promise about daytime conditions or the temperature on a specific travel date, so check forecasts closer to departure. If lower average rainfall is the priority, November has the lowest mean daily rainfall, at 0.00 mm/day; that does not guarantee rain-free days. By contrast, mean daily rainfall is highest in July, at 9.93 mm/day, making rain preparation particularly relevant when travelling then. These values are daily averages, not monthly totals, and do not indicate how often rain falls.

For outdoor sightseeing planned around average sunshine, May has the highest mean daily sunshine at 11.16 hours/day, while July has the lowest at 8.09 hours/day. These can inform daylight planning, but sunshine duration is not day length and neither average guarantees the conditions on a given day; keep plans adaptable.

Climate Data Overview for Patna, India

Explore the comprehensive climate data for Patna, India. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes, helping you understand the unique weather patterns of this region.

Month	Average: Temperature °C	Rain (mm) / day	Sunshine (h) / day
Jan	15.8	0.38	8.83
Feb	19.4	0.48	10.09
Mar	25.0	0.39	10.61
Apr	29.8	0.54	11.11
May	31.1	1.78	11.16
Jun	31.4	5.71	10.33
Jul	29.3	9.93	8.09
Aug	28.9	8.46	8.50
Sep	28.3	8.46	8.58
Oct	26.3	2.38	9.28
Nov	22.1	0.00	9.80
Dec	17.6	0.29	9.04
Average	25.4	3.23	9.62