Last updated: May 6, 2024
Under the Köppen–Geiger climate classification San Ramon features a oceanic climate (Cfb).Temperatures typically range between 16 °C (62 °F) and 18 °C (65 °F) through the year, but rarely can drop to 7 °C (45 °F) or can rise to as high as 27 °C (81 °F).The average annual precipitation amounts to about 2982 mm (117.4 inches) and receives 268 rainy days on the 1 mm (0.04 inches) threshold annually.San Ramon enjoys an average of 3305 hours of sunshine throughout the year, and daylight varies from 11 hours 28 minutes to 12 hours 44 minutes per day.
The warmest months in San Ramon are October, November and December, with daily mean temperatures ranging from 18 to 18 °C (65 - 65 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 16 to 17 °C (62 - 63 °F) throughout the day. On average each year, San Ramon experiences 9 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Maximum | 27°C (81°F) | 26°C (79°F) | 25°C (78°F) | 26°C (79°F) | 25°C (77°F) | 25°C (77°F) | 24°C (76°F) | 25°C (77°F) | 26°C (80°F) | 27°C (81°F) | 26°C (80°F) | 26°C (79°F) |
Mean maximum | 26°C (78°F) | 25°C (78°F) | 25°C (77°F) | 25°C (77°F) | 24°C (76°F) | 23°C (75°F) | 24°C (75°F) | 24°C (76°F) | 26°C (78°F) | 26°C (78°F) | 25°C (77°F) | 25°C (77°F) |
Average high | 22°C (72°F) | 22°C (71°F) | 22°C (72°F) | 22°C (72°F) | 22°C (72°F) | 21°C (71°F) | 21°C (71°F) | 22°C (71°F) | 23°C (73°F) | 23°C (73°F) | 22°C (72°F) | 22°C (72°F) |
Daily mean | 18°C (64°F) | 18°C (64°F) | 18°C (65°F) | 18°C (64°F) | 17°C (64°F) | 17°C (63°F) | 16°C (62°F) | 17°C (62°F) | 18°C (64°F) | 18°C (65°F) | 18°C (65°F) | 18°C (65°F) |
Average low | 15°C (60°F) | 15°C (60°F) | 15°C (59°F) | 14°C (58°F) | 14°C (57°F) | 13°C (56°F) | 12°C (54°F) | 12°C (54°F) | 13°C (56°F) | 14°C (58°F) | 15°C (59°F) | 15°C (60°F) |
Mean minimum | 13°C (56°F) | 14°C (57°F) | 13°C (56°F) | 12°C (54°F) | 11°C (52°F) | 11°C (52°F) | 9°C (48°F) | 9°C (48°F) | 11°C (51°F) | 12°C (53°F) | 13°C (56°F) | 14°C (58°F) |
Minimum | 12°C (54°F) | 13°C (56°F) | 12°C (54°F) | 9°C (49°F) | 8°C (46°F) | 8°C (46°F) | 7°C (45°F) | 7°C (45°F) | 10°C (51°F) | 11°C (51°F) | 12°C (53°F) | 13°C (57°F) |
Compare temperature, precipitation, sunshine, UV index in San Ramon, Junin, Peru with other places around the world.
San Ramon usually has the most precipitation in January, February and December, with an average of 27 rainy days and 476 mm (18.8 inches) of precipitation per month.The driest months in San Ramon are July, August and September. On average, 70 mm (2.8 inches) of precipitation falls during these months.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Average precipitation mm (inches) | 485 (19.1) | 513 (20.2) | 404 (15.9) | 236 (9.3) | 119 (4.7) | 99 (3.9) | 60 (2.4) | 66 (2.6) | 86 (3.4) | 166 (6.5) | 318 (12.5) | 431 (17.0) |
Average precipitation days (≥ 1 mm) | 24 | 28 | 29 | 26 | 24 | 16 | 11 | 14 | 16 | 24 | 27 | 29 |
The sunniest months in San Ramon are May, July and August, when the sun shines an average of 10 hours 26 minutes a day.Least sunny months in San Ramon: January, February and November receive an average of 7 hours 9 minutes of sunshine daily.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mean monthly sunshine hours | 192 | 210 | 261 | 275 | 318 | 297 | 322 | 329 | 309 | 296 | 241 | 249 |
Mean daily daylight hours | 12h 40m | 12h 26m | 12h 7m | 11h 49m | 11h 35m | 11h 28m | 11h 32m | 11h 44m | 12h 1m | 12h 20m | 12h 36m | 12h 44m |
San Ramon experiences the highest level of ultraviolet (UV) radiation in January, March and November, when the maximum UV index can reach values of 17 - 17, which corresponds to the Extreme category of sun exposure.May, June and July are in the Extreme exposure category. In these months, the maximum values of the UV index do not exceed 13. For more detailed information, check out our hourly San Ramon UV Index data.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
UV Index (month maximum) | 17 | 17 | 17 | 16 | 13 | 11 | 11 | 13 | 14 | 16 | 17 | 16 |