Oslo
Norway
59.95 ° N
10.72 ° E
318 ft
Cool temperate moist forest
Dfb Mild continental humid climate
+
DClo Temperate continental climate with mild summer with cold winter
Traditional Koppen classification: Dfb (Mild continental humid climate)

Official definition:
  • D – temperature of the warmest month is higher than or equal to 10 °C and temperature of the coldest month is less than or equal to -3 °C.
  • f – precipitation is relatively evenly distributed throughout the year.
  • b - temperature of each of the four warmest months is higher than 10°C, but the temperature of the warmest month is less than 22 °C

In general it can be said that the D climate type can only be found in the Northern Hemisphere, northwards from the C climate zones, closer to the North Pole. The average temperature during the warmest month is higher than or equal to 10 °C, but in the winter the coldest month has an average value of less than -3 °C. In the winter it often snows and it tends to be quite windy and cold due to the polar and Arctic air masses.

Just like the Dfa type, precipitation is evenly distributed throughout the year. In comparison to the Dfa however, summer is slightly colder and the warmest month does not have average temperature above 22 °C. The highest summer temperatures are still usually between 30 and 35 °C, in the winter it drops to -10 to -35 °C.

Precipitation is higher in the summer, but the difference is not very large. Most of the precipitation in the summer occurs during thunderstorms and so quite often there are longer dry periods between them.

This Dfb category includes for example parts of Northern U.S. (for example Buffalo or Calgary), Southern part of Canada (for example Ottawa), Southern part of Russia (for example Vladivostok), Western part of Central Europe or Southern part of Scandinavia (for example Helsinki).


Modern Trewartha classification: DClo (Temperate continental climate with mild summer with cold winter)

In the Trewartha classification, the category D is like in the Koppen classification, assigned to regions in the temperate zone. The criterion for this type of climate is four to seven months with average temperature of more than 10 °C. In general it is further subdivided into two subtypes: oceanic and continental. These differ in their average temperature of the coldest month.

Temperate climate is characterized by four distinct seasons and there are substantial differences between the temperatures in the summer and in the winter, but the absolute values are not so extreme and the change is gradual.

The continental subtype is typical for regions located more inland and this also means the temperature variation is larger than that in case of the oceanic subtype. The coldest month has an average temperature of less than 0 °C. Summers are usually warmer, while winters colder with snow being quite common.

Continental D climate type can be found for example in parts of Northeast U.S., Central and Eastern Europe and usually these areas are quite densely inhabited.

  • mild summer: warmest month with average temperature between 10 and 18 °C
  • cold winter: coldest month with average temperature between -10 and 0 °C

Summary

42 °F
37 / 50

30.0 in
160 days

73 %

4 h 28 min/day


Temperature
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Min Temperature(°F) 19.019.025.034.043.050.055.054.046.037.030.025.0 37.0
Avg Temperature(°F) 24.025.032.040.051.059.062.059.051.043.033.026.0 42.0
Max Temperature (°F) 28.030.039.050.061.068.072.070.061.048.037.032.0 50.0
Range 9.011.014.016.018.018.017.016.015.011.07.07.0 13.0


Max month Min month Annual range
Min Temperature Jul Jan, Feb 36.0°F
Avg Temperature Jul Jan 38.0°F
Max Temperature Jul Jan 44.0°F
Temperature range May, Jun Nov, Dec 53.0°F
Average
1 2 3 4 5 6 7 8 9 10 11 12
Min Temperature(°F)
Avg Temperature(°F)
Max Temperature(°F)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Min Temperature 43.0 25.0 34.00 18.0 55.0 50.0 53.00 5.0 46.0 30.0 37.67 16.0 25.0 19.0 21.00 6.0
Avg Temperature 51.0 32.0 41.00 19.0 62.0 59.0 60.00 3.0 51.0 33.0 42.33 18.0 26.0 24.0 25.00 2.0
Max Temperature 61.0 39.0 50.00 22.0 72.0 68.0 70.00 4.0 61.0 37.0 48.67 24.0 32.0 28.0 30.00 4.0

Temperature
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Temperature (°F) 24.025.032.040.051.059.062.059.051.043.033.026.0 42.0


Max month Min month Annual range
Avg Temperature Jul Jan 38.0°F
Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Temperature (°F)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Avg Temperature 51.0 32.0 41.00 19.0 62.0 59.0 60.00 3.0 51.0 33.0 42.33 18.0 26.0 24.0 25.00 2.0


Humidity
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Humidity (%) 81.078.072.065.064.065.067.072.076.080.080.081.0 42.0


Max month Min month Annual range
Avg Humidity Jan, Dec May 17.0%
Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Humidity (%)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Avg Humidity 72.0 64.0 67.00 8.0 72.0 65.0 68.00 7.0 80.0 76.0 78.67 4.0 81.0 78.0 80.00 3.0


Precipitation
+

Month Monthly average Annual total
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in) 1.91.41.91.62.12.63.23.53.53.32.92.2 2.5 30.0
Wetdays 15129111013151414141617 13 160
Wetdays ratio (%) 48.4
15,16
42.9
12,16
29.0
9,22
36.7
11,19
32.3
10,21
43.3
13,17
48.4
15,16
45.2
14,17
46.7
14,16
45.2
14,17
53.3
16,14
54.8
17,14
43.8
43.8356,56.1644


Max month Min month Max Season Min Season Annual range
Average monthly precipitation Sep Feb Autumn Winter 2.1in
Wetdays Dec Mar Autumn Spring 8
Month
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in)
Wetdays / month


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Range Total Max Min Range Total Max Min Range Total Max Min Range Total
Average monthly precipitation (in) 2.1 1.6 0.5 5.6 3.5 2.6 0.9 9.3 3.5 2.9 0.7 9.7 2.2 1.4 0.8 5.5
Wetdays 11 9 2 30 15 13 2 42 43 14 29 90 17 12 5 44

Precipitation
+

Month Monthly average Annual total
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in) 1.91.41.91.62.12.63.23.53.53.32.92.2 2.5 30.0


Max month Min month Max Season Min Season Annual range
Average monthly precipitation Sep Feb Autumn Winter 2.1in
Month
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Range Total Max Min Range Total Max Min Range Total Max Min Range Total
Average monthly precipitation (in) 2.1 1.6 0.5 5.6 3.5 2.6 0.9 9.3 3.5 2.9 0.7 9.7 2.2 1.4 0.8 5.5


Sunlight / Day length
+

Max day length Min day length Sunlight/Day length
Jan 87 min
1 h 27 min
412 min
6 h 52 min
412,1028
475 min
7 h 55 min
(31.1.)
475,965
362 min
6 h 2 min
(1.1.)
362,1078
21.1 %
87,325
Feb 176 min
2 h 56 min
553 min
9 h 13 min
553,887
628 min
10 h 28 min
(29.2.)
628,812
480 min
8 h 0 min
(1.2.)
480,960
31.8 %
176,377
Mar 294 min
4 h 54 min
716 min
11 h 56 min
716,724
798 min
13 h 18 min
(31.3.)
798,642
634 min
10 h 34 min
(1.3.)
634,806
41.1 %
294,422
Apr 364 min
6 h 4 min
881 min
14 h 41 min
881,559
958 min
15 h 58 min
(30.4.)
958,482
803 min
13 h 23 min
(1.4.)
803,637
41.3 %
364,517
May 450 min
7 h 30 min
1034 min
17 h 14 min
1034,406
1096 min
18 h 16 min
(31.5.)
1096,344
963 min
16 h 3 min
(1.5.)
963,477
43.5 %
450,584
Jun 488 min
8 h 8 min
1121 min
18 h 41 min
1121,319
1129 min
18 h 49 min
(20.6.)
1129,311
1099 min
18 h 19 min
(1.6.)
1099,341
43.5 %
488,633
Jul 423 min
7 h 3 min
1069 min
17 h 49 min
1069,371
1118 min
18 h 38 min
(1.7.)
1118,322
1008 min
16 h 48 min
(31.7.)
1008,432
39.6 %
423,646
Aug 354 min
5 h 54 min
926 min
15 h 26 min
926,514
1003 min
16 h 43 min
(1.8.)
1003,437
847 min
14 h 7 min
(31.8.)
847,593
38.2 %
354,572
Sep 276 min
4 h 36 min
764 min
12 h 44 min
764,676
842 min
14 h 2 min
(1.9.)
842,598
686 min
11 h 26 min
(30.9.)
686,754
36.1 %
276,488
Oct 168 min
2 h 48 min
600 min
10 h 0 min
600,840
681 min
11 h 21 min
(1.10.)
681,759
521 min
8 h 41 min
(31.10.)
521,919
28.0 %
168,432
Nov 82 min
1 h 22 min
447 min
7 h 27 min
447,993
516 min
8 h 36 min
(1.11.)
516,924
387 min
6 h 27 min
(30.11.)
387,1053
18.3 %
82,365
Dec 48 min
0 h 48 min
360 min
6 h 0 min
360,1080
384 min
6 h 24 min
(1.12.)
384,1056
352 min
5 h 52 min
(20.12.)
352,1088
13.3 %
48,312
Year 290 min
4 h 50 min
741 min
12 h 21 min
741,699
1129 min
18 h 49 min
(20. 6.)
1129,311
352 min
5 h 52 min
(20. 12.)
352,1088
39.1 %
290,451



Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Sunlight/day Max Min Average Sunlight/day Max Min Average Sunlight/day Max Min Average Sunlight/day
(min/day) 450 294 369 42.1%
369,508
488 354 422 40.6%
422,616
276 82 175 29.0%
175,428
176 48 104 23.6%
104,336
Day length 1096 634 877 1129 847 1038 842 387 604 628 352 439

Day length
+

Max day length Min day length
Jan 412 min
6 h 52 min
412,1028
475 min
7 h 55 min
(Array.1.)
475,965
362 min
6 h 2 min
(1.1.)
362,1078
Feb 553 min
9 h 13 min
553,887
628 min
10 h 28 min
(Array.2.)
628,812
480 min
8 h 0 min
(1.2.)
480,960
Mar 716 min
11 h 56 min
716,724
798 min
13 h 18 min
(Array.3.)
798,642
634 min
10 h 34 min
(1.3.)
634,806
Apr 881 min
14 h 41 min
881,559
958 min
15 h 58 min
(Array.4.)
958,482
803 min
13 h 23 min
(1.4.)
803,637
May 1034 min
17 h 14 min
1034,406
1096 min
18 h 16 min
(Array.5.)
1096,344
963 min
16 h 3 min
(1.5.)
963,477
Jun 1121 min
18 h 41 min
1121,319
1129 min
18 h 49 min
(Array.6.)
1129,311
1099 min
18 h 19 min
(1.6.)
1099,341
Jul 1069 min
17 h 49 min
1069,371
1118 min
18 h 38 min
(Array.7.)
1118,322
1008 min
16 h 48 min
(31.7.)
1008,432
Aug 926 min
15 h 26 min
926,514
1003 min
16 h 43 min
(Array.8.)
1003,437
847 min
14 h 7 min
(31.8.)
847,593
Sep 764 min
12 h 44 min
764,676
842 min
14 h 2 min
(Array.9.)
842,598
686 min
11 h 26 min
(30.9.)
686,754
Oct 600 min
10 h 0 min
600,840
681 min
11 h 21 min
(Array.10.)
681,759
521 min
8 h 41 min
(31.10.)
521,919
Nov 447 min
7 h 27 min
447,993
516 min
8 h 36 min
(Array.11.)
516,924
387 min
6 h 27 min
(30.11.)
387,1053
Dec 360 min
6 h 0 min
360,1080
384 min
6 h 24 min
(Array.12.)
384,1056
352 min
5 h 52 min
(20.12.)
352,1088
Year 741 min
12 h 21 min
741,699
1129 min
18 h 49 min
(21. 6.)
1129,311
352 min
5 h 52 min
(21. 12.)
352,1088



Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Max Min Average Max Min Average Max Min Average
Day length 1096 634 877 1129 847 1038 842 387 604 628 352 439

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