This information may change. Always check the official source.Last verified: August 2026 by Ondřej Kadlec
Best time to visit Costa Rica
In San Jose: December to April — the months averaging 18–27 °C by day. 12 of the twelve months clear that band in San Jose, so this is the driest run of 5 in a row.
Costa Rica is not one climate. Each reference city below is answered on its own numbers.
San Jose
Jan24°January: 24 °C by day, 16 °C at night, 89 mm of rain, recommended
Feb26°February: 26 °C by day, 16 °C at night, 61 mm of rain, recommended
Mar26°March: 26 °C by day, 17 °C at night, 61 mm of rain, recommended
Apr26°April: 26 °C by day, 18 °C at night, 113 mm of rain, recommended
May25°May: 25 °C by day, 18 °C at night, 357 mm of rain
Jun24°June: 24 °C by day, 18 °C at night, 404 mm of rain
Jul24°July: 24 °C by day, 18 °C at night, 311 mm of rain
Aug24°August: 24 °C by day, 18 °C at night, 378 mm of rain
Sep24°September: 24 °C by day, 17 °C at night, 417 mm of rain
Oct24°October: 24 °C by day, 17 °C at night, 464 mm of rain
Nov23°November: 23 °C by day, 17 °C at night, 345 mm of rain
Dec24°December: 24 °C by day, 17 °C at night, 163 mm of rain, recommended
Warmest
February, 26 °C
Coolest
November, 23 °C
Driest
February, 61 mm
Wettest
October, 464 mm
Liberia
January to March. Every month in Liberia averages above 27 °C by day, so the choice here is rain rather than temperature — those are the driest three months in a row.
Jan30°January: 30 °C by day, 22 °C at night, 4 mm of rain, recommended
Feb31°February: 31 °C by day, 23 °C at night, 2 mm of rain, recommended
Mar33°March: 33 °C by day, 23 °C at night, 7 mm of rain, recommended
Apr34°April: 34 °C by day, 24 °C at night, 39 mm of rain
May32°May: 32 °C by day, 24 °C at night, 244 mm of rain
Jun30°June: 30 °C by day, 23 °C at night, 324 mm of rain
Jul30°July: 30 °C by day, 23 °C at night, 201 mm of rain
Aug30°August: 30 °C by day, 23 °C at night, 253 mm of rain
Sep29°September: 29 °C by day, 23 °C at night, 385 mm of rain
Oct28°October: 28 °C by day, 22 °C at night, 421 mm of rain
Nov28°November: 28 °C by day, 22 °C at night, 153 mm of rain
Dec29°December: 29 °C by day, 22 °C at night, 20 mm of rain
Warmest
April, 34 °C
Coolest
October, 28 °C
Driest
February, 2 mm
Wettest
October, 421 mm
Puerto Viejo
November to March — 18–27 °C by day. 6 of the twelve months clear that band in Puerto Viejo, so this is the driest run of 5 in a row.
Jan26°January: 26 °C by day, 21 °C at night, 238 mm of rain, recommended
Feb27°February: 27 °C by day, 21 °C at night, 163 mm of rain, recommended
Mar27°March: 27 °C by day, 22 °C at night, 152 mm of rain, recommended
Apr28°April: 28 °C by day, 22 °C at night, 188 mm of rain
May28°May: 28 °C by day, 23 °C at night, 369 mm of rain
Jun28°June: 28 °C by day, 23 °C at night, 372 mm of rain
Jul27°July: 27 °C by day, 22 °C at night, 447 mm of rain
Aug28°August: 28 °C by day, 23 °C at night, 350 mm of rain
Sep28°September: 28 °C by day, 23 °C at night, 284 mm of rain
Oct28°October: 28 °C by day, 23 °C at night, 375 mm of rain
Nov27°November: 27 °C by day, 22 °C at night, 461 mm of rain, recommended
Dec26°December: 26 °C by day, 22 °C at night, 397 mm of rain, recommended
Warmest
April, 28 °C
Coolest
January, 26 °C
Driest
March, 152 mm
Wettest
November, 461 mm
How this is worked out: a month qualifies when its mean daytime high falls between 18 °C and 27 °C. Where more than five qualify, the answer is the driest run of consecutive qualifying months; where none do, it is the driest three months in a row if the year is hot throughout, or the warmest three if it never gets there. The figures are the thirty-year monthly averages charted below, and they are averages, not a forecast — any single year can miss them by a wide margin.
San Jose
Long-term averages for San Jose: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
DayNight
Show the monthly table
San Jose
Month
Day (°C)
Night (°C)
Rain (mm)
January
24
16
89
February
26
16
61
March
26
17
61
April
26
18
113
May
25
18
357
June
24
18
404
July
24
18
311
August
24
18
378
September
24
17
417
October
24
17
464
November
23
17
345
December
24
17
163
Liberia
Long-term averages for Liberia: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
DayNight
Show the monthly table
Liberia
Month
Day (°C)
Night (°C)
Rain (mm)
January
30
22
4
February
31
23
2
March
33
23
7
April
34
24
39
May
32
24
244
June
30
23
324
July
30
23
201
August
30
23
253
September
29
23
385
October
28
22
421
November
28
22
153
December
29
22
20
Puerto Viejo
Long-term averages for Puerto Viejo: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
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