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Jasper vs Reykjavík
Comparing Jasper change · Reykjavík change
Reykjavík is the warmer of the two — about 2°C on the annual average; Reykjavík is the wetter, with 969 mm 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 2°C on the annual average.
Precipitation
Reykjavík is the wetter — about 969 mm 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 (°C) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jasper | -3 | 1 | 4 | 11 | 17 | 20 | 24 | 23 | 18 | 10 | 2 | -4 |
| Reykjavík | 3 | 3 | 4 | 6 | 9 | 12 | 14 | 13 | 11 | 7 | 5 | 4 |
| Difference | +6 | +2 | -1 | -4 | -7 | -8 | -10 | -10 | -7 | -3 | +3 | +7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Jasper | -3 | 1 | 4 | 11 | 17 | 20 |
| Reykjavík | 3 | 3 | 4 | 6 | 9 | 12 |
| Difference | +6 | +2 | -1 | -4 | -7 | -8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Jasper | 24 | 23 | 18 | 10 | 2 | -4 |
| Reykjavík | 14 | 13 | 11 | 7 | 5 | 4 |
| Difference | -10 | -10 | -7 | -3 | +3 | +7 |
Avg low (°C) Reykjavík runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jasper | -15 | -13 | -9 | -4 | 1 | 5 | 7 | 6 | 2 | -2 | -8 | -14 |
| Reykjavík | -1 | -2 | -2 | 1 | 4 | 7 | 9 | 9 | 6 | 3 | 0 | -1 |
| Difference | +13 | +11 | +7 | +5 | +3 | +2 | +1 | +3 | +4 | +5 | +8 | +14 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Jasper | -15 | -13 | -9 | -4 | 1 | 5 |
| Reykjavík | -1 | -2 | -2 | 1 | 4 | 7 |
| Difference | +13 | +11 | +7 | +5 | +3 | +2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Jasper | 7 | 6 | 2 | -2 | -8 | -14 |
| Reykjavík | 9 | 9 | 6 | 3 | 0 | -1 |
| Difference | +1 | +3 | +4 | +5 | +8 | +14 |
Precipitation (mm) Reykjavík runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jasper | 22 | 14 | 21 | 18 | 32 | 55 | 54 | 45 | 33 | 27 | 27 | 17 |
| Reykjavík | 133 | 127 | 109 | 75 | 93 | 50 | 95 | 135 | 128 | 114 | 149 | 123 |
| Difference | +111 | +113 | +88 | +58 | +61 | -5 | +42 | +90 | +95 | +87 | +123 | +107 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Jasper | 22 | 14 | 21 | 18 | 32 | 55 |
| Reykjavík | 133 | 127 | 109 | 75 | 93 | 50 |
| Difference | +111 | +113 | +88 | +58 | +61 | -5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Jasper | 54 | 45 | 33 | 27 | 27 | 17 |
| Reykjavík | 95 | 135 | 128 | 114 | 149 | 123 |
| Difference | +42 | +90 | +95 | +87 | +123 | +107 |
Snowfall (cm)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jasper | — | — | — | — | — | — | — | — | — | — | — | — |
| Reykjavík | 28 | 40 | 29 | 12 | 1 | 0 | 0 | 0 | 0 | 1 | 21 | 30 |
| Difference | — | — | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Jasper | — | — | — | — | — | — |
| Reykjavík | 28 | 40 | 29 | 12 | 1 | 0 |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Jasper | — | — | — | — | — | — |
| Reykjavík | 0 | 0 | 0 | 1 | 21 | 30 |
| 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