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Bratislava vs Boston
Comparing Bratislava change · Boston change
Bratislava and Boston have nearly identical year-round temperatures; Boston is the wetter, with 20 in more rain a year.
How the seasons compare
The differences between Bratislava and Boston, in everyday terms.
Summers
Summers are nearly the same
Bratislava: Warm
Boston: Warm
Winters
Bratislava has milder winters
Bratislava: Cold
Boston: Cold
Rain & snow
Boston is wetter
Bratislava: Moderate rainfall
Boston: Wet
Sky
Similar amounts of sun
Bratislava: Often cloudy
Boston: Partly cloudy
Month-by-month charts
Temperature
Bratislava and Boston run remarkably close all year.
Precipitation
Boston is the wetter — about 20 in more across the year.
Clear skies
The two cities see a similar amount of sun.
Exact monthly numbers
Tap a metric to open its full table. Desktop shows all twelve months; on a phone each metric splits into Jan–Jun and Jul–Dec.
Avg high (°F) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bratislava | 37 | 42 | 52 | 63 | 71 | 78 | 82 | 81 | 71 | 60 | 48 | 38 |
| Boston | 37 | 39 | 46 | 56 | 67 | 76 | 82 | 80 | 73 | 62 | 52 | 42 |
| Difference | -1 | -3 | -6 | -6 | -4 | -2 | — | -1 | +2 | +2 | +4 | +4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Bratislava | 37 | 42 | 52 | 63 | 71 | 78 |
| Boston | 37 | 39 | 46 | 56 | 67 | 76 |
| Difference | -1 | -3 | -6 | -6 | -4 | -2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Bratislava | 82 | 81 | 71 | 60 | 48 | 38 |
| Boston | 82 | 80 | 73 | 62 | 52 | 42 |
| Difference | — | -1 | +2 | +2 | +4 | +4 |
Avg low (°F) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bratislava | 27 | 29 | 35 | 42 | 51 | 57 | 61 | 60 | 52 | 43 | 36 | 29 |
| Boston | 23 | 25 | 31 | 41 | 50 | 60 | 66 | 65 | 58 | 48 | 38 | 29 |
| Difference | -3 | -4 | -4 | -2 | — | +2 | +5 | +5 | +6 | +4 | +2 | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Bratislava | 27 | 29 | 35 | 42 | 51 | 57 |
| Boston | 23 | 25 | 31 | 41 | 50 | 60 |
| Difference | -3 | -4 | -4 | -2 | — | +2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Bratislava | 61 | 60 | 52 | 43 | 36 | 29 |
| Boston | 66 | 65 | 58 | 48 | 38 | 29 |
| Difference | +5 | +5 | +6 | +4 | +2 | — |
Precipitation (in) Boston runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bratislava | 1.5 | 1.3 | 1.5 | 1.4 | 2.2 | 2.4 | 2.5 | 2.3 | 2.8 | 1.8 | 1.9 | 1.7 |
| Boston | 3.4 | 3.2 | 4.2 | 3.6 | 3.3 | 3.9 | 3.3 | 3.2 | 3.6 | 4 | 3.7 | 4.3 |
| Difference | +1.9 | +1.9 | +2.7 | +2.2 | +1 | +1.5 | +0.8 | +0.9 | +0.7 | +2.2 | +1.7 | +2.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Bratislava | 1.5 | 1.3 | 1.5 | 1.4 | 2.2 | 2.4 |
| Boston | 3.4 | 3.2 | 4.2 | 3.6 | 3.3 | 3.9 |
| Difference | +1.9 | +1.9 | +2.7 | +2.2 | +1 | +1.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Bratislava | 2.5 | 2.3 | 2.8 | 1.8 | 1.9 | 1.7 |
| Boston | 3.3 | 3.2 | 3.6 | 4 | 3.7 | 4.3 |
| Difference | +0.8 | +0.9 | +0.7 | +2.2 | +1.7 | +2.6 |
Snowfall (in)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bratislava | — | — | — | — | — | — | — | — | — | — | — | — |
| Boston | 14.3 | 14.4 | 9 | 1.6 | 0 | 0 | 0 | 0 | 0 | 0.2 | 0.7 | 9 |
| Difference | — | — | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Bratislava | — | — | — | — | — | — |
| Boston | 14.3 | 14.4 | 9 | 1.6 | 0 | 0 |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Bratislava | — | — | — | — | — | — |
| Boston | 0 | 0 | 0 | 0.2 | 0.7 | 9 |
| Difference | — | — | — | — | — | — |
Cloud cover (%) Bratislava runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bratislava | 72 | 72 | 68 | 62 | 65 | 64 | 61 | 56 | 62 | 67 | 74 | 74 |
| Boston | 63 | 62 | 62 | 64 | 65 | 63 | 57 | 56 | 55 | 60 | 62 | 63 |
| Difference | -9 | -10 | -6 | +1 | +1 | -1 | -3 | — | -7 | -7 | -12 | -12 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Bratislava | 72 | 72 | 68 | 62 | 65 | 64 |
| Boston | 63 | 62 | 62 | 64 | 65 | 63 |
| Difference | -9 | -10 | -6 | +1 | +1 | -1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Bratislava | 61 | 56 | 62 | 67 | 74 | 74 |
| Boston | 57 | 56 | 55 | 60 | 62 | 63 |
| Difference | -3 | — | -7 | -7 | -12 | -12 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bratislava | 91 | 87 | 79 | 72 | 68 | 63 | 58 | 58 | 66 | 77 | 87 | 91 |
| Boston | 88 | 87 | 83 | 80 | 79 | 79 | 74 | 73 | 74 | 78 | 82 | 86 |
| Difference | -3 | — | +4 | +7 | +11 | +16 | +16 | +15 | +8 | +1 | -6 | -6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Bratislava | 91 | 87 | 79 | 72 | 68 | 63 |
| Boston | 88 | 87 | 83 | 80 | 79 | 79 |
| Difference | -3 | — | +4 | +7 | +11 | +16 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Bratislava | 58 | 58 | 66 | 77 | 87 | 91 |
| Boston | 74 | 73 | 74 | 78 | 82 | 86 |
| Difference | +16 | +15 | +8 | +1 | -6 | -6 |
How both climates are changing
Both cities are warming. Each city has its own warming trend; see its trends page for the year-by-year detail. Bratislava trends → · Boston trends →
Methodology & sources
Bratislava
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at M R Stefanik, a weather station, about 8 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.
Boston
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Boston (NOAA GHCN station USW00014739), about 4 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.
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