Warmest month
- Mexico City
- May · 19.07 °C
- Siem Reap
- April · 29.67 °C
Mexico City (Mexico) vs Siem Reap (Cambodia): Temperature, Rainfall and Sunshine
Reference period: Mexico City 2013–2023 · Siem Reap 2013–2023
Siem Reap (Cambodia) has a higher monthly mean temperature than Mexico City (Mexico) in every month of the year.
Key monthly differences
Coolest month
- Mexico City
- January · 13.62 °C
- Siem Reap
- December · 25.39 °C
Driest month
- Mexico City
- February · 0.20 mm/day
- Siem Reap
- January · 0.57 mm/day
Sunniest month
- Mexico City
- May · 11.22 hours/day
- Siem Reap
- March · 10.82 hours/day
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Climate comparison questions
When are the temperatures most similar and most different?
The smallest difference in monthly mean temperature is 10.33 °C (May); the largest is 12.38 °C (January).
How much do temperatures vary across the year?
The difference between the warmest and coolest monthly means is 5.44 °C in Mexico City (Mexico) and 4.28 °C in Siem Reap (Cambodia). This describes seasonal variation, not the range between daytime highs and nighttime lows.
Which location has more rainfall?
Mexico City (Mexico) has a higher daily rainfall average in 0 months and Siem Reap (Cambodia) in 12; 0 months are equal at the displayed precision. Rainfall amounts do not tell us how many days it rains.
Which location has more sunshine?
Mexico City (Mexico) has more average sunshine hours per day in 10 months and Siem Reap (Cambodia) in 2; 0 months are equal at the displayed precision. Sunshine duration is different from daylight duration.
Climate data notes
Show data and calculation
Daily values are averaged separately for each calendar month over the saved reference period. Temperatures are daily means, not daytime highs. Rainfall is an average daily amount, not a monthly total; sunshine is average hours per day. These historical averages are not a weather forecast. Each location’s reference period is listed below and may differ.
Mean of the 12 monthly averages
Monthly climate data
Difference: Siem Reap (Cambodia) minus Mexico City (Mexico)
Temperature °C
| Month | Mexico City | Siem Reap | +/- |
|---|---|---|---|
| Jan | 13.62 | 26.00 | +12.38 |
| Feb | 15.91 | 27.41 | +11.50 |
| Mar | 17.34 | 29.54 | +12.20 |
| Apr | 18.94 | 29.67 | +10.73 |
| May | 19.07 | 29.40 | +10.33 |
| Jun | 17.96 | 28.62 | +10.66 |
| Jul | 16.80 | 27.88 | +11.08 |
| Aug | 16.80 | 27.74 | +10.94 |
| Sep | 16.49 | 26.99 | +10.50 |
| Oct | 15.88 | 26.60 | +10.71 |
| Nov | 15.01 | 26.56 | +11.56 |
| Dec | 14.02 | 25.39 | +11.37 |
| Annual mean | 16.49 | 27.65 | +11.16 |
Average sunshine (hours/day)
| Month | Mexico City | Siem Reap | +/- |
|---|---|---|---|
| Jan | 9.82 | 10.01 | +0.19 |
| Feb | 10.43 | 10.48 | +0.05 |
| Mar | 10.83 | 10.82 | −0.01 |
| Apr | 11.13 | 10.57 | −0.56 |
| May | 11.22 | 10.31 | −0.91 |
| Jun | 10.49 | 9.38 | −1.11 |
| Jul | 10.54 | 8.26 | −2.27 |
| Aug | 10.22 | 8.26 | −1.95 |
| Sep | 9.45 | 7.61 | −1.84 |
| Oct | 9.59 | 8.55 | −1.04 |
| Nov | 9.63 | 9.39 | −0.24 |
| Dec | 9.65 | 9.50 | −0.15 |
| Annual mean | 10.25 | 9.43 | −0.82 |
Average daily rainfall (mm/day)
| Month | Mexico City | Siem Reap | +/- |
|---|---|---|---|
| Jan | 0.25 | 0.57 | +0.32 |
| Feb | 0.20 | 0.72 | +0.52 |
| Mar | 0.50 | 1.47 | +0.98 |
| Apr | 1.05 | 3.75 | +2.69 |
| May | 1.71 | 5.73 | +4.03 |
| Jun | 4.54 | 5.19 | +0.65 |
| Jul | 5.74 | 6.31 | +0.57 |
| Aug | 6.14 | 6.64 | +0.49 |
| Sep | 6.17 | 10.30 | +4.13 |
| Oct | 2.29 | 8.12 | +5.84 |
| Nov | 0.65 | 3.29 | +2.64 |
| Dec | 0.25 | 0.86 | +0.61 |
| Annual mean | 2.46 | 4.41 | +1.95 |
Snow (mm)
| Month | Mexico City | Siem Reap | +/- |
|---|---|---|---|
| Jan | 0.00 | 0.00 | 0.00 |
| Feb | 0.00 | 0.00 | 0.00 |
| Mar | 0.00 | 0.00 | 0.00 |
| Apr | 0.00 | 0.00 | 0.00 |
| May | 0.00 | 0.00 | 0.00 |
| Jun | 0.00 | 0.00 | 0.00 |
| Jul | 0.00 | 0.00 | 0.00 |
| Aug | 0.00 | 0.00 | 0.00 |
| Sep | 0.00 | 0.00 | 0.00 |
| Oct | 0.00 | 0.00 | 0.00 |
| Nov | 0.00 | 0.00 | 0.00 |
| Dec | 0.00 | 0.00 | 0.00 |
| Annual mean | 0.00 | 0.00 | 0.00 |
