Hiking, month by month

Where the days are dry and cool enough to walk all day, measured over ten years. 19 places, each month tested the same way.

How a month is tested for hiking

A walking day has a daytime high of 10–27 °C, feels no hotter than 30 °C, and is not a rainy day.
A month is good where 2 days in 3 are walking days, and fair where 1 in 2 are.
Counted day by day over ten years of measured climate at the place itself, not up on the trails, where it is cooler.

A test on measured figures, the same at every place and from every city: the same month always gives the same answer. It is "good" or "fair", and a month that passes neither is simply not listed. It is separate from the month's own verdict, which also weighs holidays, crowds and fares.

Every place, every month

Place	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Vancouver	0	1	7	15	23	21	24	24	20	16	3	0
Santiago	2	3	10	23	27	24	26	25	26	25	15	6
Hong Kong	28	24	22	15	4	0	0	0	0	9	21	29
Reykjavik	0	0	0	1	6	13	18	19	8	1	0	0
Leh	0	0	1	8	18	16	16	21	23	15	2	0
Srinagar	3	5	16	19	20	14	5	7	12	26	20	7
Almaty	0	2	13	19	18	9	2	6	20	23	8	1
Kathmandu	28	25	22	13	8	3	0	0	4	23	29	30
Cape Town	14	12	18	20	24	20	23	24	22	21	20	18
Seoul	0	3	18	24	20	10	2	2	16	25	16	1
Taipei	23	19	18	9	4	0	0	0	1	12	17	19
Anchorage	0	0	0	8	21	24	20	19	15	3	0	0
Asheville	7	12	17	20	17	10	2	8	14	24	19	13
Maui	21	18	15	10	5	0	0	0	0	1	7	16
Oahu	22	22	17	14	8	1	0	0	0	0	8	18
The Grand Canyon	2	6	13	25	26	10	4	8	19	25	16	6
Yellowstone	0	0	1	3	15	21	23	23	23	10	0	0
Yosemite	16	12	14	21	22	13	3	4	15	26	22	17
Zion	10	13	19	25	16	2	0	0	6	23	22	14
Good	5	4	2	7	6	5	4	5	6	10	6	2

A cell is good, fair or blank, and shows the days in the month that passed the test.

Measured at each place's own point, where its visitors stay, not up on the trails: a mountain path is about 6.5 °C cooler for every 1,000 m it climbs.