La Sierra has a subtropical highland climate (Köppen Cfb) with pleasant mornings and warm afternoons year-round, accompanied by moderate to little rainfall from June to September and heavy to very heavy rainfall from October to May.
| Climate data for La Sierra (Sierra La), elevation 1,870 m (6,140 ft), (1981–2010) |
| Month |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Year |
| Mean daily maximum °C (°F) |
21.8
(71.2) |
22.0
(71.6) |
22.1
(71.8) |
21.9
(71.4) |
22.1
(71.8) |
22.2
(72.0) |
22.9
(73.2) |
23.6
(74.5) |
23.7
(74.7) |
22.6
(72.7) |
21.4
(70.5) |
21.2
(70.2) |
22.3
(72.1) |
| Daily mean °C (°F) |
17.5
(63.5) |
17.8
(64.0) |
17.9
(64.2) |
17.8
(64.0) |
18.0
(64.4) |
18.1
(64.6) |
18.3
(64.9) |
18.7
(65.7) |
18.6
(65.5) |
17.9
(64.2) |
17.3
(63.1) |
17.3
(63.1) |
17.9
(64.2) |
| Mean daily minimum °C (°F) |
14.3
(57.7) |
14.4
(57.9) |
14.4
(57.9) |
14.6
(58.3) |
14.7
(58.5) |
14.6
(58.3) |
14.4
(57.9) |
14.4
(57.9) |
14.3
(57.7) |
14.1
(57.4) |
14.0
(57.2) |
14.2
(57.6) |
14.4
(57.9) |
| Average precipitation mm (inches) |
296.7
(11.68) |
201.4
(7.93) |
233.8
(9.20) |
225.6
(8.88) |
182.7
(7.19) |
76.6
(3.02) |
39.6
(1.56) |
41.4
(1.63) |
106.1
(4.18) |
309.9
(12.20) |
399.0
(15.71) |
372.2
(14.65) |
2,485.1
(97.84) |
| Average precipitation days |
19 |
16 |
20 |
22 |
21 |
15 |
9 |
9 |
12 |
22 |
24 |
24 |
214 |
| Average relative humidity (%) |
88 |
87 |
88 |
88 |
87 |
83 |
76 |
72 |
75 |
83 |
89 |
90 |
84 |
| Mean monthly sunshine hours |
133.3 |
110.1 |
108.5 |
99.0 |
111.6 |
135.0 |
164.3 |
170.5 |
132.0 |
114.7 |
99.0 |
114.7 |
1,492.7 |
| Mean daily sunshine hours |
4.3 |
3.9 |
3.5 |
3.3 |
3.6 |
4.5 |
5.3 |
5.5 |
4.4 |
3.7 |
3.3 |
3.7 |
4.1 |
| Source: Instituto de Hidrologia Meteorologia y Estudios Ambientales[3] |
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