Mumbai in December
In December, Mumbai has a daily high of 31.4 °C (88.5 °F) and a daily low of 20.2 °C (68.4 °F), as 1991-2020 model estimates; figures in brackets are converted. The daily high is a model estimate, adjusted against station records. There is no data for rain: Not published: the model failed our station test in tropical cities.
Last updated : back, with ERA5-Land model estimates.
Best time to visit Mumbai: December misses our rule: days are 3.4 °C over our 28 °C (model estimates).
What December is like in Mumbai
- On 6 December each year, people travel to Dadar to mark the death anniversary of B. R. Ambedkar. Stalls sell brass figures of him and of the Buddha. Source: Mint, checked .
- At Bhandup Pumping Station, naturalists help people tell greater flamingos from lesser ones, from the bank or a boat. The birds gather from December. Source: Free Press Journal, checked .
- Around Navy Day in early December, the Indian Naval Central Band plays at the Gateway of India. Its stirring music backs the Beating Retreat and Tattoo. Source: Free Press Journal, checked .
Key figures
Weather in December, 1991-2020 model estimates
- Daily high
- 31.4 °C (88.5 °F)
- Daily low
- 20.2 °C (68.4 °F)
- Rain
- no data
- Sunshine
- no data
Model estimate 1991-2020, not a weather station: ERA5-Land model estimates (Copernicus), computed by City by Month for the grid cell nearest the city. Daily high: model estimate, adjusted against station records. Licence: CC BY 4.0. Checked . How we make and test model estimates
Model estimate for the ERA5-Land grid cell at 19.1° N, 72.9° E, 4 km from the city centre point.
How we define and convert these figures
Notes. Rain: Not published: the model failed our station test in tropical cities. Sunshine: Not in our ERA5-Land estimates.
Daylight on 15 December 2026
- Sunrise
- 07:04 local time
- Sunset
- 18:03 local time
- Day length
- 11 h 00 min
Day length 1-31 December: 11 h 04 min to 11 h 00 min, -4 min.
Source: NOAA Solar Calculator equations, checked .
Month by month
Each month: daily high in °C, 1991-2020 model estimates. Rain: no data.
ERA5-Land model estimates 1991-2020, as above, checked .
This month against the year
| Measure | December | Rank |
|---|---|---|
| Daily high | 31.4 °C | equal 5th coldest |
| Daily low | 20.2 °C | 3rd coldest |
| Rain | no data | no data |
| Sunshine | no data | no data |
| Day length | 11 h 00 min | shortest |
Equal values share a rank. How we rank months
ERA5-Land model estimates 1991-2020, as above, checked .
Day length: NOAA solar equations, checked .
Public holidays this month
| Date | Holiday |
|---|---|
| Friday | Christmas |
Typed from the official list and re-checked, .
December 2027: no data. No official 2027 list published yet.
Source: Official public holiday list (portal.mcgm.gov.in), checked ; holidays Python library, checked . Library: holidays 0.105.
Same month in 8 model-estimate cities
Mumbai is warmer than 6 of our 8 model-estimate cities in December by mean daily high. How we rank cities
Closest high and low in December: Bangkok (1.0 °C apart), Sydney (4.0), Melbourne (7.2).
| City | Gap from Mumbai, °C | High, °C | Low, °C | Rain, mm | Sunshine, hours |
|---|---|---|---|---|---|
| Mumbai (this page) | — | 31.4 | 20.2 | no data | no data |
| Bangkok (closest) | 1.0 | 31.6 | 21.9 | no data | no data |
| Sydney (closest) | 4.0 | 25.6 | 18.1 | 62.5 | no data |
| Melbourne (closest) | 7.2 | 24.4 | 12.9 | 64.0 | no data |
| Delhi | 9.6 | 23.2 | 9.3 | no data | no data |
| Lisbon | 12.7 | 15.8 | 10.5 | 77.9 | no data |
| Porto | 14.7 | 14.7 | 7.5 | 150.9 | no data |
| Istanbul | 17.3 | 11.1 | 6.0 | 99.3 | no data |
Sources (1991-2020): ERA5-Land model estimates, checked . Each city's page names its grid cell. All sources in full on Methodology.
Sources
- Attribution: Copernicus Climate Change Service (2025): ERA5 Land hourly time-series data from 1950 to present. Copernicus Climate Change Service (C3S) Climate Data Store (CDS). DOI: 10.24381/ee82e357. Accessed on the check date shown. Generated using or contains modified Copernicus Climate Change Service information 2025. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains. Licence: CC BY 4.0. Checked .
- NOAA Solar Calculator equations, computed locally, NOAA Global Monitoring Laboratory (method); City by Month (computation). Attribution: Computed with the NOAA Solar Calculator method (no NOAA endorsement implied). Licence: Method, not data. Checked .
- holidays Python library, run locally. Attribution: holidays library, Vacanza team. Licence: MIT. Checked .
Official sources
Cite this page: City by Month. "Mumbai in December: weather, daylight, holidays". https://citybymonth.com/cities/india/mumbai/december/. Last updated 8 November 2026.