Avg High
Mexico City in December
Avg Low
Rain
Daylight
11h
What to expect
In Mexico City, December sits in early winter, with a clear seasonal rhythm running through the month. Most days land in a mild, easygoing zone, with evenings that can feel like a different gear. Comfort is usually predictable, so a standard day plan works well. Daylight is moderate, so steady pacing works well. A practical way to frame the month is that moist air can add weight to longer walking days, while sun exposure is consistently strong at midday.
December in context
How it compares to the rest of the year in Mexico City.
Hottest (avg)
#11 / 12
Wettest (avg)
#12 / 12
Daylight Hours
#12 / 12
Windiest (avg)
#10 / 12
Highest UV
#12 / 12
Most Humid
#7 / 12
Monthly climate breakdown
Temperature
- Daytime high
-
- Nighttime low
-
- Feels like (avg)
-
Sunshine
- Daylight hours
- 11 h
- UV index (max)
- 7
- Typical sun hours
- 07:02 - 18:01
Rain & Snow
- Total rain
-
- Rainy days
- 4 days
- Cloud cover (avg)
- 40%
Humidity & Wind
- Humidity (avg)
- 61%
- Wind (avg)
-
- Wind (max gusts)
-
Daily climate explorer
Day 15 selected for December. Typical high 20.9°C and low 7.4°C.
Typical disruptions in December
Based on 30 years of historical data, these are the disruption patterns most likely to affect plans in December.
Cold High impact
Cold feels-like nights Measures: Cold feels-like nights (min <=5C). Observed about 39% of days (12.1 days/month) in December. Historical risk signal only, not a day-by-day forecast.
12.1 days / month
~39% of days
Why this matters
- Expected days 12.1 days / month
- Probability ~39% of days
- Intensity Up to ~5°C (P95)
Cold feels-like nights are possible on ~12 days. Long outdoor blocks become harder to sustain, so layer up and keep a warm indoor fallback nearby.
Rain High impact
Washout risk Measures: Washout day risk. Observed about 2% of days (0.7 days/month) in December. Historical risk signal only, not a day-by-day forecast.
0.7 days / month
~2% of days
Why this matters
- Expected days 0.7 days / month
- Probability ~2% of days
- Intensity Up to ~21mm (P95)
Washout conditions are possible on ~1 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Rain Moderate
Rain disruption Measures: Likely rain disruption days. Observed about 3% of days (0.8 days/month) in December. Historical risk signal only, not a day-by-day forecast.
0.8 days / month
~3% of days
Why this matters
- Expected days 0.8 days / month
- Probability ~3% of days
- Intensity Up to ~21mm (P95)
Rain disruption risk appears on ~1 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Show all disruptions (11 more)
Rain High impact
Washout run Measures: Multi-day washout runs. Observed about 0.1 days/month in December. Historical risk signal only, not a day-by-day forecast.
0.1 days / month
Probability unavailable
Why this matters
- Expected days 0.1 days / month
- Probability —
- Intensity Up to ~14mm (P95)
Multi-day washout runs are possible on ~0 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Rain Moderate
Heavy rain days Measures: Heavy rain days (>=10mm). Observed about 1% of days (0.4 days/month) in December. Historical risk signal only, not a day-by-day forecast.
0.4 days / month
~1% of days
Why this matters
- Expected days 0.4 days / month
- Probability ~1% of days
- Intensity Up to ~22mm (P95)
Heavy rain is possible on ~0 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Cloud Minor
Cloudy days Measures: Cloudy days (cloud cover >=60%). Observed about 26% of days (8.2 days/month) in December. Historical risk signal only, not a day-by-day forecast.
8.2 days / month
~26% of days
Why this matters
- Expected days 8.2 days / month
- Probability ~26% of days
- Intensity Up to ~98% (P95)
Cloudy skies are possible on ~8 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Rain Minor
Wet days Measures: Wet days (>=0.1mm). Observed about 21% of days (6.4 days/month) in December. Historical risk signal only, not a day-by-day forecast.
6.4 days / month
~21% of days
Why this matters
- Expected days 6.4 days / month
- Probability ~21% of days
- Intensity Up to ~10mm (P95)
Measurable rain is possible on ~6 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Cold Minor
Cold nights Measures: Cold nights (min <=5C). Observed about 13% of days (3.9 days/month) in December. Historical risk signal only, not a day-by-day forecast.
3.9 days / month
~13% of days
Why this matters
- Expected days 3.9 days / month
- Probability ~13% of days
- Intensity Up to ~5°C (P95)
Cold nights are possible on ~4 days. Long outdoor blocks become harder to sustain, so layer up and keep a warm indoor fallback nearby.
Cloud Minor
Mostly cloudy days Measures: Mostly cloudy days (cloud cover >=80%). Observed about 12% of days (3.6 days/month) in December. Historical risk signal only, not a day-by-day forecast.
3.6 days / month
~12% of days
Why this matters
- Expected days 3.6 days / month
- Probability ~12% of days
- Intensity Up to ~100% (P95)
Mostly cloudy skies are possible on ~4 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Rain Minor
Rainy hours Measures: Rain-hours signal (>=3h rain). Observed about 11% of days (3.3 days/month) in December. Historical risk signal only, not a day-by-day forecast.
3.3 days / month
~11% of days
Why this matters
- Expected days 3.3 days / month
- Probability ~11% of days
- Intensity Up to ~21h (P95)
Several rainy hours are possible on ~3 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Wind Minor
Gusty days Measures: Gusty days (>=40 km/h). Observed about 8% of days (2.6 days/month) in December. Historical risk signal only, not a day-by-day forecast.
2.6 days / month
~8% of days
Why this matters
- Expected days 2.6 days / month
- Probability ~8% of days
- Intensity Up to ~58km/h (P95)
Gusty conditions are possible on ~3 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Rain Minor
Wet most of day Measures: Wet-most-of-day signal (>=6h rain). Observed about 6% of days (1.9 days/month) in December. Historical risk signal only, not a day-by-day forecast.
1.9 days / month
~6% of days
Why this matters
- Expected days 1.9 days / month
- Probability ~6% of days
- Intensity Up to ~23h (P95)
Wet-most-of-day conditions are possible on ~2 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Cloud Minor
Overcast days Measures: Overcast days (cloud cover >=95%). Observed about 3% of days (1.1 days/month) in December. Historical risk signal only, not a day-by-day forecast.
1.1 days / month
~3% of days
Why this matters
- Expected days 1.1 days / month
- Probability ~3% of days
- Intensity Up to ~100% (P95)
Overcast skies are possible on ~1 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Humidity Minor
High humidity Measures: High humidity days (RH >=80%). Observed about 3% of days (1.0 days/month) in December. Historical risk signal only, not a day-by-day forecast.
1.0 days / month
~3% of days
Why this matters
- Expected days 1.0 days / month
- Probability ~3% of days
- Intensity Up to ~89% (P95)
High humidity is possible on ~1 days. Comfort and pace can drop quickly, so plan shorter outdoor blocks with air-conditioned backup stops.
Frequently asked questions
Is December a good time to visit Mexico City?
Typical December days in Mexico City reach highs of 21°C (70°F) with nights around 8°C (46°F). It usually feels mild by day and cold after dark. It is one of the drier months, which suits outdoor exploring and sightseeing.
What are temperatures like in December?
In December, you can usually expect highs of 21°C (70°F) and lows near 8°C (46°F). That means mild days and cold nights, so pack layers you can add or remove.
How much does it rain in December?
Rainfall in December averages 15 mm (0.59 in) across roughly 4 days. Overall it is a mostly dry time of year, so showers are usually brief rather than all-day downpours.
How many hours of daylight are there in December?
You can expect about 11 hours of daylight in December. Sunrise is typically around 07:02 and sunset near 18:01. Days are on the shorter side, so plan activities around limited daylight.
How strong is the sun in December?
UV levels are often high (around 7). Regular sunscreen and a hat are recommended.
Is it windy in December?
In December, average wind speeds are around 6 km/h (4 mph), with gusts on the windiest days reaching about 39 km/h (24 mph). On the ground, it is a gentle to moderate breeze is common, but stronger winds are not frequent.