San Jose weather in January
In January, San Jose sees average daytime highs of 29°C and overnight lows near 23°C, with 108 mm of rain across 14.8 wet days and about 11.3 hours of daylight. It is the 12th-warmest and 9th-wettest month of the year here.
Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 15% of the time in January, and the air most often feels oppressive.
Daylight stretches from about 11 h 12 min at the start of January to 11 h 24 min by month's end. Set against the rest of the year, January is San Jose's 4th-clearest and 1st-windiest month. For the whole year in context, see San Jose's year-round climate.
- Daytime high
- 29°
- 12th warmest
- Overnight low
- 23°
- 2nd coldest
- Rainfall
- 108 mm
- 14.8 wet days
- Daylight
- 11 h 18 min
- 6:16 AM – 5:34 PM
- Cloud cover
- 68%
- 4th clearest
- Wind
- 9 km/h
- 1st windiest
- Solar energy
- 4.34 kWh/m²
- Travel score
- 4.9
- out of 10
Temperature in January
Day-to-day highs hold fairly steady near 29°C through the month.
A typical January day in San Jose reaches about 29°C in the afternoon and slips back to 23°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 31°C. Set against its neighbours, January runs on par with December and on par with February.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Avg low (°C) | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 29 | 23 |
| 2 | 29 | 23 |
| 3 | 29 | 23 |
| 4 | 29 | 23 |
| 5 | 29 | 23 |
| 6 | 29 | 23 |
| 7 | 29 | 23 |
| 8 | 29 | 23 |
| 9 | 29 | 23 |
| 10 | 29 | 23 |
| 11 | 29 | 23 |
| 12 | 29 | 23 |
| 13 | 29 | 23 |
| 14 | 29 | 23 |
| 15 | 29 | 23 |
| 16 | 29 | 23 |
| 17 | 29 | 23 |
| 18 | 29 | 23 |
| 19 | 29 | 23 |
| 20 | 29 | 23 |
| 21 | 29 | 23 |
| 22 | 29 | 23 |
| 23 | 29 | 23 |
| 24 | 29 | 23 |
| 25 | 29 | 23 |
| 26 | 29 | 23 |
| 27 | 29 | 23 |
| 28 | 29 | 23 |
| 29 | 29 | 23 |
| 30 | 29 | 23 |
| 31 | 29 | 23 |
How January really feels in San Jose
Once humidity and wind are folded in, January averages 23 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
San Jose weather by month
How January compares with the rest of the year at a glance. January is the 12th-warmest and 9th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 29° / 23° | 108 | 14.8 | 11.3 | 4.9 |
| Feb | 29° / 23° | 80 | 11 | 11.6 | 4.9 |
| Mar | 31° / 23° | 79 | 12.9 | 11.9 | 4.4 |
| Apr | 32° / 24° | 66 | 11.7 | 12.3 | 3.7 |
| May | 32° / 25° | 203 | 21.6 | 12.6 | 2.8 |
| Jun | 31° / 25° | 317 | 27 | 12.8 | 2.4 |
| Jul | 30° / 25° | 474 | 30.1 | 12.7 | 2.4 |
| Aug | 30° / 25° | 425 | 29.8 | 12.4 | 2.5 |
| Sep | 30° / 24° | 413 | 28.9 | 12.1 | 2.5 |
| Oct | 31° / 24° | 270 | 27 | 11.7 | 2.8 |
| Nov | 30° / 24° | 170 | 20.6 | 11.4 | 3.6 |
| Dec | 29° / 24° | 193 | 19.5 | 11.2 | 4.1 |
Cloud cover in January
The sky is clear or mostly clear about 15% of the time in January.
Beyond those clear spells, partly cloudy skies cover about 23% of January, with mostly cloudy or overcast conditions the remaining 62%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 38 | 39 | 40 | 40 | 39 | 39 | 39 | 38 | 37 | 37 | 36 | 36 | 36 | 35 | 35 | 35 | 35 | 36 | 37 | 37 | 37 | 39 | 39 | 40 | 41 | 41 | 42 | 42 | 42 | 42 | 42 |
| Cloudier (%) | 62 | 61 | 60 | 60 | 61 | 61 | 61 | 62 | 63 | 63 | 64 | 64 | 64 | 65 | 65 | 65 | 65 | 64 | 63 | 63 | 63 | 61 | 61 | 60 | 59 | 59 | 58 | 58 | 58 | 58 | 58 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 38 | 62 |
| 2 | 39 | 61 |
| 3 | 40 | 60 |
| 4 | 40 | 60 |
| 5 | 39 | 61 |
| 6 | 39 | 61 |
| 7 | 39 | 61 |
| 8 | 38 | 62 |
| 9 | 37 | 63 |
| 10 | 37 | 63 |
| 11 | 36 | 64 |
| 12 | 36 | 64 |
| 13 | 36 | 64 |
| 14 | 35 | 65 |
| 15 | 35 | 65 |
| 16 | 35 | 65 |
| 17 | 35 | 65 |
| 18 | 36 | 64 |
| 19 | 37 | 63 |
| 20 | 37 | 63 |
| 21 | 37 | 63 |
| 22 | 39 | 61 |
| 23 | 39 | 61 |
| 24 | 40 | 60 |
| 25 | 41 | 59 |
| 26 | 41 | 59 |
| 27 | 42 | 58 |
| 28 | 42 | 58 |
| 29 | 42 | 58 |
| 30 | 42 | 58 |
| 31 | 42 | 58 |
Chance of precipitation in January
San Jose gets around 108 mm of rain over 14.8 wet days in January. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 48% and peaks near 51% on the wettest days. The odds ease toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 51 | 51 | 50 | 50 | 50 | 50 | 50 | 50 | 51 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 49 | 49 | 48 | 48 | 47 | 46 | 46 | 45 | 44 | 43 | 43 | 43 | 43 | 43 | 43 |
| Rain chance (%) | |
|---|---|
| 1 | 51 |
| 2 | 51 |
| 3 | 50 |
| 4 | 50 |
| 5 | 50 |
| 6 | 50 |
| 7 | 50 |
| 8 | 50 |
| 9 | 51 |
| 10 | 50 |
| 11 | 50 |
| 12 | 50 |
| 13 | 50 |
| 14 | 50 |
| 15 | 50 |
| 16 | 50 |
| 17 | 49 |
| 18 | 49 |
| 19 | 48 |
| 20 | 48 |
| 21 | 47 |
| 22 | 46 |
| 23 | 46 |
| 24 | 45 |
| 25 | 44 |
| 26 | 43 |
| 27 | 43 |
| 28 | 43 |
| 29 | 43 |
| 30 | 43 |
| 31 | 43 |
Humidity in January
Most of January feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, January lands in the oppressive band about 75% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Humid (%) | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Muggy (%) | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 12 | 12 | 13 | 13 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 |
| Oppressive (%) | 67 | 68 | 70 | 71 | 74 | 75 | 75 | 76 | 77 | 76 | 77 | 77 | 78 | 78 | 78 | 78 | 77 | 77 | 77 | 76 | 76 | 75 | 76 | 75 | 75 | 75 | 74 | 74 | 75 | 75 | 75 |
| Miserable (%) | 22 | 21 | 20 | 19 | 17 | 16 | 16 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 |
| Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|
| 1 | 1 | 10 | 67 | 22 |
| 2 | 1 | 10 | 68 | 21 |
| 3 | 1 | 9 | 70 | 20 |
| 4 | 1 | 9 | 71 | 19 |
| 5 | 0 | 9 | 74 | 17 |
| 6 | 0 | 9 | 75 | 16 |
| 7 | 0 | 9 | 75 | 16 |
| 8 | 0 | 9 | 76 | 15 |
| 9 | 0 | 9 | 77 | 14 |
| 10 | 0 | 10 | 76 | 14 |
| 11 | 0 | 10 | 77 | 13 |
| 12 | 0 | 10 | 77 | 13 |
| 13 | 0 | 10 | 78 | 12 |
| 14 | 0 | 10 | 78 | 12 |
| 15 | 0 | 10 | 78 | 12 |
| 16 | 0 | 10 | 78 | 12 |
| 17 | 0 | 11 | 77 | 12 |
| 18 | 0 | 11 | 77 | 12 |
| 19 | 0 | 11 | 77 | 12 |
| 20 | 0 | 12 | 76 | 12 |
| 21 | 0 | 12 | 76 | 12 |
| 22 | 0 | 13 | 75 | 12 |
| 23 | 0 | 13 | 76 | 11 |
| 24 | 0 | 14 | 75 | 11 |
| 25 | 0 | 14 | 75 | 11 |
| 26 | 0 | 14 | 75 | 11 |
| 27 | 0 | 15 | 74 | 11 |
| 28 | 0 | 15 | 74 | 11 |
| 29 | 0 | 15 | 75 | 10 |
| 30 | 0 | 15 | 75 | 10 |
| 31 | 0 | 15 | 75 | 10 |
Wind in January
Winds average 9 km/h in January, the windiest month of the year.
Across January, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 9 | calm |
| 2 | 9 | calm |
| 3 | 9 | calm |
| 4 | 9 | calm |
| 5 | 9 | calm |
| 6 | 9 | calm |
| 7 | 9 | calm |
| 8 | 9 | calm |
| 9 | 9 | calm |
| 10 | 9 | calm |
| 11 | 9 | calm |
| 12 | 9 | calm |
| 13 | 9 | calm |
| 14 | 9 | calm |
| 15 | 9 | calm |
| 16 | 9 | calm |
| 17 | 9 | calm |
| 18 | 9 | calm |
| 19 | 9 | calm |
| 20 | 9 | calm |
| 21 | 9 | calm |
| 22 | 9 | calm |
| 23 | 9 | calm |
| 24 | 9 | calm |
| 25 | 9 | calm |
| 26 | 9 | calm |
| 27 | 9 | calm |
| 28 | 9 | calm |
| 29 | 9 | calm |
| 30 | 9 | calm |
| 31 | 9 | calm |
Sunrise & sunset in January
Daylight runs from about 11 h 12 min at the start of January to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 12 minutes over January. Sunrise moves from 6:12 AM to 6:17 AM, and sunset from 5:26 PM to 5:41 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.2 | 11.2 | 11.2 | 11.2 | 11.2 | 11.2 | 11.2 | 11.2 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 |
| Sunrise (AM) | 6:12 | 6:13 | 6:13 | 6:13 | 6:14 | 6:14 | 6:14 | 6:15 | 6:15 | 6:15 | 6:15 | 6:16 | 6:16 | 6:16 | 6:16 | 6:16 | 6:16 | 6:17 | 6:17 | 6:17 | 6:17 | 6:17 | 6:17 | 6:17 | 6:17 | 6:17 | 6:17 | 6:17 | 6:17 | 6:17 | 6:17 |
| Sunset (PM) | 5:26 | 5:26 | 5:27 | 5:27 | 5:28 | 5:28 | 5:29 | 5:30 | 5:30 | 5:31 | 5:31 | 5:32 | 5:32 | 5:33 | 5:33 | 5:34 | 5:34 | 5:35 | 5:35 | 5:36 | 5:36 | 5:37 | 5:38 | 5:38 | 5:38 | 5:39 | 5:39 | 5:40 | 5:40 | 5:41 | 5:41 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.2 | 6:12 | 5:26 |
| 2 | 11.2 | 6:13 | 5:26 |
| 3 | 11.2 | 6:13 | 5:27 |
| 4 | 11.2 | 6:13 | 5:27 |
| 5 | 11.2 | 6:14 | 5:28 |
| 6 | 11.2 | 6:14 | 5:28 |
| 7 | 11.2 | 6:14 | 5:29 |
| 8 | 11.2 | 6:15 | 5:30 |
| 9 | 11.3 | 6:15 | 5:30 |
| 10 | 11.3 | 6:15 | 5:31 |
| 11 | 11.3 | 6:15 | 5:31 |
| 12 | 11.3 | 6:16 | 5:32 |
| 13 | 11.3 | 6:16 | 5:32 |
| 14 | 11.3 | 6:16 | 5:33 |
| 15 | 11.3 | 6:16 | 5:33 |
| 16 | 11.3 | 6:16 | 5:34 |
| 17 | 11.3 | 6:16 | 5:34 |
| 18 | 11.3 | 6:17 | 5:35 |
| 19 | 11.3 | 6:17 | 5:35 |
| 20 | 11.3 | 6:17 | 5:36 |
| 21 | 11.3 | 6:17 | 5:36 |
| 22 | 11.3 | 6:17 | 5:37 |
| 23 | 11.3 | 6:17 | 5:38 |
| 24 | 11.3 | 6:17 | 5:38 |
| 25 | 11.4 | 6:17 | 5:38 |
| 26 | 11.4 | 6:17 | 5:39 |
| 27 | 11.4 | 6:17 | 5:39 |
| 28 | 11.4 | 6:17 | 5:40 |
| 29 | 11.4 | 6:17 | 5:40 |
| 30 | 11.4 | 6:17 | 5:41 |
| 31 | 11.4 | 6:17 | 5:41 |
Solar energy in January
Average shortwave solar energy reaching the ground each day in January, about 4.34 kWh/m².
For context, solar energy here swings from a low near 3.98 kWh/m² to a high of 6.42 kWh/m² in April across the year — January's 4.34 kWh/m² sits near the bottom.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.3 | 4.3 | 4.3 | 4.4 | 4.4 | 4.4 | 4.5 | 4.5 | 4.5 | 4.5 | 4.6 | 4.6 | 4.6 | 4.7 | 4.7 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.1 | Bright |
| 2 | 4.1 | Bright |
| 3 | 4.1 | Bright |
| 4 | 4.1 | Bright |
| 5 | 4.1 | Bright |
| 6 | 4.1 | Bright |
| 7 | 4.1 | Bright |
| 8 | 4.1 | Bright |
| 9 | 4.2 | Bright |
| 10 | 4.2 | Bright |
| 11 | 4.2 | Bright |
| 12 | 4.2 | Bright |
| 13 | 4.2 | Bright |
| 14 | 4.2 | Bright |
| 15 | 4.2 | Bright |
| 16 | 4.2 | Bright |
| 17 | 4.3 | Bright |
| 18 | 4.3 | Bright |
| 19 | 4.3 | Bright |
| 20 | 4.4 | Bright |
| 21 | 4.4 | Bright |
| 22 | 4.4 | Bright |
| 23 | 4.5 | Bright |
| 24 | 4.5 | Bright |
| 25 | 4.5 | Bright |
| 26 | 4.5 | Bright |
| 27 | 4.6 | Bright |
| 28 | 4.6 | Bright |
| 29 | 4.6 | Bright |
| 30 | 4.7 | Bright |
| 31 | 4.7 | Bright |
Hazard calendar for San Jose
In January, San Jose sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
San Jose sits in the Pacific typhoon belt; the season peaks July–October.
San Jose's rainy season runs June–October, when most of the year's rain falls.
Is January a good time to visit San Jose?
Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
January is a reasonable time to visit San Jose for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for San Jose in January
From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In January, San Jose sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. About 15 days see rain.
Sea temperature near San Jose in January
The nearest coast averages about 27°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 32 km away) is warmest in June at about 30°C and coldest in January near 27°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 27 | 28 | 29 | 29 | 30 | 29 | 29 | 29 | 29 | 28 | 28 |
| Comfort | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 28 | Warm |
| Apr | 29 | Tropical |
| May | 29 | Tropical |
| Jun | 30 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 28 | Tropical |
| Dec | 28 | Warm |
UV index in San Jose in January
Clear-sky midday UV in January peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in San Jose peaks around August 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 9 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 10 | 12 | 12 | 14 | 12 | 12 | 12 | 14 | 13 | 11 | 10 | 9 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Very high |
| Feb | 12 | Extreme |
| Mar | 12 | Extreme |
| Apr | 14 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 14 | Extreme |
| Sep | 13 | Extreme |
| Oct | 11 | Extreme |
| Nov | 10 | Very high |
| Dec | 9 | Very high |
Air quality in San Jose in January
Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.
Air quality in San Jose is worst in September — around 21 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (April, 10 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 14 | 14 | 12 | 10 | 14 | 19 | 20 | 21 | 21 | 16 | 12 | 12 |
| Level | Moderate | Moderate | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 14 | Moderate |
| Mar | 12 | Good |
| Apr | 10 | Good |
| May | 14 | Moderate |
| Jun | 19 | Moderate |
| Jul | 20 | Moderate |
| Aug | 21 | Moderate |
| Sep | 21 | Moderate |
| Oct | 16 | Moderate |
| Nov | 12 | Moderate |
| Dec | 12 | Moderate |
Where is San Jose?
San Jose sits at 13.3°N, 123.5°E, 199 m above sea level, in Philippines. The nearest listed city is Polangui, 9.0 km away.
Topography around San Jose
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Jose.
Within 3 km, the terrain around San Jose has significant variations in elevation — a maximum elevation change of 547 m around an average of 282 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,605 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,411 m.
The land around San Jose is covered by trees (88%) within 3 km, trees (75%) within 16 km, and water (57%) and trees (36%) within 80 km.
Philippines travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B / C
- 230 V · 60 Hz
- Prices
- ≈ 33% of US
- price level, 2025
- GDP per capita
- $4,171
- 2025
- Happiness
- 6.2 / 10
- World Happiness, 2025
- Safe drinking water
- 48%
- of population, 2024
- Homicide rate
- 4.3
- per 100k, 2023
- Road deaths
- 12
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- High
- EF EPI 569
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for San Jose (13.35°, 123.55°, elevation 199 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).