Arenal Volcano Climate
Trip Planning - About Costa Rica

Month Average Highs Average Lows Average Rainfall Humidity
  F C F C in. mm %
Jan. 83 28 68 20 7.48 192 n/a
Feb. 84 29 67 20 5.14 132 n/a
Mar. 86 30 69 20 3.58 92 n/a
Apr. 87 31 69 21 3.7 95 n/a
May 88 31 70 21 10.23 262 n/a
Jun. 86 30 71 22 16.15 414 n/a
Jul. 85 30 71 22 19.87 509 n/a
Aug. 85 30 72 22 17.05 437 n/a
Sep. 86 30 70 21 16.07 412 n/a
Oct. 85 30 70 21 16.98 435 n/a
Nov. 83 29 71 22 12 308 n/a
Dec. 82 28 70 21 10.1 259 n/a
 
Source: National Weather Services of Costa Rica