Warmest month
- Belfast
- July · 15.59 °C
- New York City
- July · 24.54 °C
Belfast (Great Britain) vs New York City (USA): Temperature, Rainfall and Sunshine
Reference period: Belfast 2013–2023 · New York City 2013–2023
Across the 12 monthly averages, Belfast (Great Britain) is warmer in 5 months and New York City (USA) in 7; 0 months are equal at the displayed precision.
Key monthly differences
Coolest month
- Belfast
- January · 5.54 °C
- New York City
- January · -0.23 °C
Driest month
- Belfast
- April · 1.79 mm/day
- New York City
- January · 2.14 mm/day
Sunniest month
- Belfast
- June · 10.36 hours/day
- New York City
- July · 11.45 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 0.81 °C (November); the largest is 8.95 °C (July).
How much do temperatures vary across the year?
The difference between the warmest and coolest monthly means is 10.05 °C in Belfast (Great Britain) and 24.77 °C in New York City (USA). This describes seasonal variation, not the range between daytime highs and nighttime lows.
Which location has more rainfall?
Belfast (Great Britain) has a higher daily rainfall average in 3 months and New York City (USA) in 9; 0 months are equal at the displayed precision. Rainfall amounts do not tell us how many days it rains.
Which location has more sunshine?
Belfast (Great Britain) has more average sunshine hours per day in 2 months and New York City (USA) in 10; 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: New York City (USA) minus Belfast (Great Britain)
Temperature °C
| Month | Belfast | New York City | +/- |
|---|---|---|---|
| Jan | 5.54 | −0.23 | −5.78 |
| Feb | 5.76 | 0.33 | −5.43 |
| Mar | 6.39 | 3.97 | −2.42 |
| Apr | 8.24 | 10.07 | +1.84 |
| May | 11.21 | 15.79 | +4.58 |
| Jun | 14.17 | 20.92 | +6.75 |
| Jul | 15.59 | 24.54 | +8.95 |
| Aug | 15.15 | 23.53 | +8.38 |
| Sep | 13.66 | 20.07 | +6.41 |
| Oct | 11.26 | 14.25 | +2.99 |
| Nov | 8.02 | 7.20 | −0.81 |
| Dec | 6.55 | 3.25 | −3.30 |
| Annual mean | 10.13 | 11.97 | +1.85 |
Average sunshine (hours/day)
| Month | Belfast | New York City | +/- |
|---|---|---|---|
| Jan | 3.29 | 5.78 | +2.49 |
| Feb | 5.13 | 6.49 | +1.36 |
| Mar | 6.54 | 7.82 | +1.28 |
| Apr | 8.82 | 8.73 | −0.09 |
| May | 10.03 | 9.65 | −0.38 |
| Jun | 10.36 | 10.96 | +0.60 |
| Jul | 9.78 | 11.45 | +1.67 |
| Aug | 8.95 | 10.38 | +1.43 |
| Sep | 7.28 | 8.99 | +1.71 |
| Oct | 5.33 | 7.13 | +1.80 |
| Nov | 4.00 | 6.65 | +2.66 |
| Dec | 2.60 | 5.20 | +2.60 |
| Annual mean | 6.84 | 8.27 | +1.43 |
Average daily rainfall (mm/day)
| Month | Belfast | New York City | +/- |
|---|---|---|---|
| Jan | 2.43 | 2.14 | −0.29 |
| Feb | 2.75 | 2.23 | −0.53 |
| Mar | 2.24 | 2.28 | +0.04 |
| Apr | 1.79 | 3.32 | +1.53 |
| May | 2.45 | 2.96 | +0.50 |
| Jun | 2.73 | 3.47 | +0.74 |
| Jul | 2.96 | 4.40 | +1.45 |
| Aug | 3.07 | 3.10 | +0.03 |
| Sep | 2.66 | 3.76 | +1.10 |
| Oct | 3.13 | 4.10 | +0.97 |
| Nov | 3.03 | 2.50 | −0.52 |
| Dec | 3.11 | 3.41 | +0.30 |
| Annual mean | 2.70 | 3.14 | +0.44 |
Snow (mm)
| Month | Belfast | New York City | +/- |
|---|---|---|---|
| Jan | 0.84 | 4.81 | +3.98 |
| Feb | 1.14 | 8.50 | +7.36 |
| Mar | 1.78 | 6.10 | +4.32 |
| Apr | 0.29 | 0.39 | +0.10 |
| May | 0.02 | 0.01 | −0.02 |
| 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 | 0.01 | 0.71 | +0.70 |
| Dec | 0.34 | 2.52 | +2.18 |
| Annual mean | 0.37 | 1.92 | +1.55 |
