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Jasper vs Reykjavík
Comparing Jasper change · Reykjavík change
Reykjavík is the warmer of the two — about 3°F on the annual average; Reykjavík is the wetter, with 38 in more rain a year, and Jasper the sunnier.
How the seasons compare
The differences between Jasper and Reykjavík, in everyday terms.
Summers
Jasper has far hotter summers
Jasper: Mild
Reykjavík: Cool
Winters
Reykjavík has much milder winters
Jasper: Very cold
Reykjavík: Cold
Rain & snow
Reykjavík is much wetter
Jasper: Fairly dry
Reykjavík: Wet
Sky
Jasper is sunnier
Jasper: Often cloudy
Reykjavík: Often grey
Month-by-month charts
Temperature
Reykjavík is the warmer of the two — about 3°F on the annual average.
Precipitation
Reykjavík is the wetter — about 38 in more across the year.
Clear skies
Jasper has the clearer skies — the higher line.
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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jasper | 27 | 33 | 40 | 51 | 62 | 68 | 75 | 74 | 64 | 50 | 35 | 26 |
| Reykjavík | 38 | 37 | 38 | 44 | 49 | 54 | 57 | 56 | 52 | 45 | 40 | 38 |
| Difference | +11 | +4 | -2 | -8 | -13 | -14 | -17 | -18 | -13 | -5 | +5 | +13 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Jasper | 27 | 33 | 40 | 51 | 62 | 68 |
| Reykjavík | 38 | 37 | 38 | 44 | 49 | 54 |
| Difference | +11 | +4 | -2 | -8 | -13 | -14 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Jasper | 75 | 74 | 64 | 50 | 35 | 26 |
| Reykjavík | 57 | 56 | 52 | 45 | 40 | 38 |
| Difference | -17 | -18 | -13 | -5 | +5 | +13 |
Avg low (°F) Reykjavík runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jasper | 6 | 9 | 17 | 25 | 33 | 41 | 45 | 43 | 36 | 28 | 17 | 6 |
| Reykjavík | 29 | 28 | 29 | 34 | 39 | 44 | 47 | 47 | 43 | 37 | 32 | 31 |
| Difference | +24 | +19 | +12 | +9 | +6 | +3 | +3 | +5 | +7 | +9 | +15 | +24 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Jasper | 6 | 9 | 17 | 25 | 33 | 41 |
| Reykjavík | 29 | 28 | 29 | 34 | 39 | 44 |
| Difference | +24 | +19 | +12 | +9 | +6 | +3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Jasper | 45 | 43 | 36 | 28 | 17 | 6 |
| Reykjavík | 47 | 47 | 43 | 37 | 32 | 31 |
| Difference | +3 | +5 | +7 | +9 | +15 | +24 |
Precipitation (in) Reykjavík runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jasper | 0.9 | 0.5 | 0.8 | 0.7 | 1.3 | 2.2 | 2.1 | 1.8 | 1.3 | 1.1 | 1.1 | 0.7 |
| Reykjavík | 5.2 | 5 | 4.3 | 3 | 3.7 | 2 | 3.8 | 5.3 | 5 | 4.5 | 5.9 | 4.9 |
| Difference | +4.4 | +4.4 | +3.5 | +2.3 | +2.4 | -0.2 | +1.6 | +3.5 | +3.7 | +3.4 | +4.8 | +4.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Jasper | 0.9 | 0.5 | 0.8 | 0.7 | 1.3 | 2.2 |
| Reykjavík | 5.2 | 5 | 4.3 | 3 | 3.7 | 2 |
| Difference | +4.4 | +4.4 | +3.5 | +2.3 | +2.4 | -0.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Jasper | 2.1 | 1.8 | 1.3 | 1.1 | 1.1 | 0.7 |
| Reykjavík | 3.8 | 5.3 | 5 | 4.5 | 5.9 | 4.9 |
| Difference | +1.6 | +3.5 | +3.7 | +3.4 | +4.8 | +4.2 |
Snowfall (in)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jasper | — | — | — | — | — | — | — | — | — | — | — | — |
| Reykjavík | 10.8 | 15.8 | 11.4 | 4.6 | 0.4 | 0 | 0 | 0 | 0 | 0.4 | 8.2 | 11.9 |
| Difference | — | — | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Jasper | — | — | — | — | — | — |
| Reykjavík | 10.8 | 15.8 | 11.4 | 4.6 | 0.4 | 0 |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Jasper | — | — | — | — | — | — |
| Reykjavík | 0 | 0 | 0 | 0.4 | 8.2 | 11.9 |
| Difference | — | — | — | — | — | — |
Cloud cover (%) Reykjavík runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jasper | 70 | 68 | 74 | 73 | 73 | 78 | 67 | 64 | 67 | 75 | 76 | 70 |
| Reykjavík | 85 | 82 | 82 | 79 | 76 | 79 | 81 | 79 | 79 | 78 | 82 | 84 |
| Difference | +15 | +15 | +8 | +6 | +3 | +2 | +14 | +16 | +12 | +2 | +6 | +14 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Jasper | 70 | 68 | 74 | 73 | 73 | 78 |
| Reykjavík | 85 | 82 | 82 | 79 | 76 | 79 |
| Difference | +15 | +15 | +8 | +6 | +3 | +2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Jasper | 67 | 64 | 67 | 75 | 76 | 70 |
| Reykjavík | 81 | 79 | 79 | 78 | 82 | 84 |
| Difference | +14 | +16 | +12 | +2 | +6 | +14 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jasper | 94 | 93 | 90 | 83 | 73 | 73 | 73 | 74 | 77 | 82 | 91 | 94 |
| Reykjavík | 88 | 87 | 86 | 84 | 83 | 83 | 85 | 86 | 86 | 88 | 88 | 88 |
| Difference | -7 | -6 | -3 | +2 | +10 | +10 | +11 | +12 | +10 | +5 | -4 | -7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Jasper | 94 | 93 | 90 | 83 | 73 | 73 |
| Reykjavík | 88 | 87 | 86 | 84 | 83 | 83 |
| Difference | -7 | -6 | -3 | +2 | +10 | +10 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Jasper | 73 | 74 | 77 | 82 | 91 | 94 |
| Reykjavík | 85 | 86 | 86 | 88 | 88 | 88 |
| Difference | +11 | +12 | +10 | +5 | -4 | -7 |
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. Jasper trends → · Reykjavík trends →
Methodology & sources
Jasper
Temperature & precipitation — 1991–2020 normals computed from 27 years of daily observations at Jasper Warden, a weather station, about 7 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.
Reykjavík
Temperature & precipitation — 1991–2020 normals computed from 11 years of daily observations at Keflavik, a weather station, about 39 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.
← change Jasper · change Reykjavík → · Jasper page · Reykjavík page