Climate and average weather in Santiago de Surco
In Santiago de Surco, the summers are humid, warm, dry, and mostly cloudy and the winters are mild and partly cloudy.
Over the course of the year, the temperature in Santiago de Surco typically varies from 15°C to 23°C, and is rarely below 14°C or above 24°C. February is the hottest month of the year, while August is the coldest.
Based on the travel score, the best times of year to visit Santiago de Surco for warm-weather activities are from early January to late June and early October to late December.
- Hottest
- Feb
- 23°
- Coldest
- Aug
- 15°
- Wettest
- Jul
- 17 mm
- Driest
- Apr
- 2 mm
- Rain / yr
- 96 mm
- 32 wet days
- Daylight
- 11.3–12.7 h
- shortest–longest
- Elevation
- 92 m
- 12.1°S
- Clearest
- Aug
- 66% cloud
Santiago de Surco weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around early January to late June.
Temperature through the year
Daily average highs and lows in Santiago de Surco, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
Temperatures in Santiago de Surco stay fairly even through the year, without a distinct hot or cool season. The warmest month is February, with an average high of 23°C and low of 21°C; the coolest is August, with an average low of 15°C and high of 16°C.
Days typically run about 2°C warmer than nights year-round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 22 | 23 | 22 | 21 | 19 | 17 | 17 | 16 | 16 | 17 | 18 | 20 |
| Avg low (°C) | 20 | 21 | 21 | 19 | 17 | 16 | 15 | 15 | 15 | 15 | 16 | 18 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 22 | 20 |
| Feb | 23 | 21 |
| Mar | 22 | 21 |
| Apr | 21 | 19 |
| May | 19 | 17 |
| Jun | 17 | 16 |
| Jul | 17 | 15 |
| Aug | 16 | 15 |
| Sep | 16 | 15 |
| Oct | 17 | 15 |
| Nov | 18 | 16 |
| Dec | 20 | 18 |
Average hourly temperature in Santiago de Surco
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on February afternoons, near 23°C, and coldest before dawn in August, near 15°C.
Santiago de Surco weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 22° / 20° | 7 | 1.7 | 12.6 | 7.3 |
| Feb | 23° / 21° | 9 | 2.4 | 12.4 | 7.3 |
| Mar | 22° / 21° | 4 | 1.3 | 12.1 | 7.4 |
| Apr | 21° / 19° | 2 | 0.3 | 11.7 | 7.4 |
| May | 19° / 17° | 6 | 2.1 | 11.4 | 7.0 |
| Jun | 17° / 16° | 14 | 5.2 | 11.3 | 6.1 |
| Jul | 17° / 15° | 17 | 6.8 | 11.4 | 5.5 |
| Aug | 16° / 15° | 15 | 5.8 | 11.6 | 5.5 |
| Sep | 16° / 15° | 10 | 3.4 | 11.9 | 5.7 |
| Oct | 17° / 15° | 5 | 1.2 | 12.3 | 6.2 |
| Nov | 18° / 16° | 4 | 0.8 | 12.6 | 6.8 |
| Dec | 20° / 18° | 4 | 1 | 12.7 | 7.0 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Santiago de Surco gets about 96 mm of precipitation a year. On a typical day the chance of rain is mostly dry, but that rises and falls sharply with the seasons.
The wetter season lasts 4.1 months, from around May 22 to Sep 24, peaking in July at about 24% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Apr 13.
July is the wettest month by volume, with 17 mm over about 7 wet days; April is the driest, with 2 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 6 | 8 | 4 | 1 | 7 | 17 | 22 | 18 | 11 | 4 | 3 | 3 |
| Rain days | 2 | 2 | 1 | 0 | 2 | 5 | 7 | 6 | 3 | 1 | 1 | 1 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 6 | 2 |
| Feb | 8 | 2 |
| Mar | 4 | 1 |
| Apr | 1 | 0 |
| May | 7 | 2 |
| Jun | 17 | 5 |
| Jul | 22 | 7 |
| Aug | 18 | 6 |
| Sep | 11 | 3 |
| Oct | 4 | 1 |
| Nov | 3 | 1 |
| Dec | 3 | 1 |
Monthly rainfall
Over a full year, Santiago de Surco collects about 96 mm of rain across 32 wet days — roughly 8 mm in an average month.
It doesn’t fall evenly. July is the wettest month with 17 mm, while April is the driest at just 2 mm. The three wettest months alone bring about 47% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 7 | 9 | 4 | 2 | 6 | 14 | 17 | 15 | 10 | 5 | 4 | 4 |
| Rain days | 2 | 2 | 1 | 0 | 2 | 5 | 7 | 6 | 3 | 1 | 1 | 1 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 7 | 2 |
| Feb | 9 | 2 |
| Mar | 4 | 1 |
| Apr | 2 | 0 |
| May | 6 | 2 |
| Jun | 14 | 5 |
| Jul | 17 | 7 |
| Aug | 15 | 6 |
| Sep | 10 | 3 |
| Oct | 5 | 1 |
| Nov | 4 | 1 |
| Dec | 4 | 1 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Santiago de Surco, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.
The clearer part of the year begins around April 11 and lasts for 6.1 months, ending around October 14. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 35% of the time on average.
The cloudier part of the year begins around November 21 and lasts for 4.6 months, ending around April 10. The cloudiest month is February, when it is overcast or mostly cloudy 93% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 12 | 7 | 9 | 26 | 32 | 29 | 29 | 35 | 28 | 22 | 22 | 16 |
| Cloudier (%) | 88 | 93 | 91 | 74 | 68 | 71 | 71 | 65 | 72 | 78 | 78 | 84 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 12 | 88 |
| Feb | 7 | 93 |
| Mar | 9 | 91 |
| Apr | 26 | 74 |
| May | 32 | 68 |
| Jun | 29 | 71 |
| Jul | 29 | 71 |
| Aug | 35 | 65 |
| Sep | 28 | 72 |
| Oct | 22 | 78 |
| Nov | 22 | 78 |
| Dec | 16 | 84 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around January 1, brings about 12 h 42 min of light; the shortest, around May 31, only 11 h 18 min — a swing of roughly 1 h 24 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.6 | 12.4 | 12.1 | 11.7 | 11.4 | 11.3 | 11.4 | 11.6 | 11.9 | 12.3 | 12.6 | 12.7 |
| Sunrise (AM) | 5:58 | 6:11 | 6:15 | 6:16 | 6:21 | 6:30 | 6:33 | 6:24 | 6:04 | 5:45 | 5:36 | 5:43 |
| Sunset (PM) | 6:37 | 6:35 | 6:20 | 6:00 | 5:48 | 5:47 | 5:54 | 6:00 | 6:00 | 6:01 | 6:10 | 6:25 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 12.6 | 5:58 | 6:37 |
| Feb | 12.4 | 6:11 | 6:35 |
| Mar | 12.1 | 6:15 | 6:20 |
| Apr | 11.7 | 6:16 | 6:00 |
| May | 11.4 | 6:21 | 5:48 |
| Jun | 11.3 | 6:30 | 5:47 |
| Jul | 11.4 | 6:33 | 5:54 |
| Aug | 11.6 | 6:24 | 6:00 |
| Sep | 11.9 | 6:04 | 6:00 |
| Oct | 12.3 | 5:45 | 6:01 |
| Nov | 12.6 | 5:36 | 6:10 |
| Dec | 12.7 | 5:43 | 6:25 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Santiago de Surco averages about 2 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 3 days.
The sunnier stretch runs 3.0 months, from around Apr 4 to Jul 4. The sunniest month is April, with roughly 3 sunny days (gloomy).
The greyest month is February, down near 0 sunny days — about 84% fewer than the April peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 1 | 0 | 1 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 2 | 2 |
| Sky | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy |
| Sunny days | Sky | |
|---|---|---|
| Jan | 1 | Gloomy |
| Feb | 0 | Gloomy |
| Mar | 1 | Gloomy |
| Apr | 3 | Gloomy |
| May | 3 | Gloomy |
| Jun | 2 | Gloomy |
| Jul | 2 | Gloomy |
| Aug | 2 | Gloomy |
| Sep | 2 | Gloomy |
| Oct | 1 | Gloomy |
| Nov | 2 | Gloomy |
| Dec | 2 | Gloomy |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
In Santiago de Surco, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 6.3 months, from around November 16 to May 27. The muggiest month is January, when the air feels humid, muggy or worse about 100% of the time.
The most comfortable stretch runs from around May 28 to November 15, and August is the most comfortable month — the air is dry or comfortable 96% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 3 | 1 | 0 | 0 |
| Comfortable (%) | 0 | 0 | 0 | 0 | 22 | 65 | 90 | 93 | 92 | 87 | 42 | 1 |
| Humid (%) | 14 | 0 | 7 | 52 | 69 | 32 | 7 | 3 | 4 | 13 | 56 | 77 |
| Muggy (%) | 82 | 88 | 83 | 46 | 9 | 3 | 1 | 1 | 1 | 0 | 1 | 21 |
| Oppressive (%) | 5 | 11 | 11 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| Jan | 0 | 0 | 14 | 82 | 5 |
| Feb | 0 | 0 | 0 | 88 | 11 |
| Mar | 0 | 0 | 7 | 83 | 11 |
| Apr | 0 | 0 | 52 | 46 | 2 |
| May | 0 | 22 | 69 | 9 | 0 |
| Jun | 0 | 65 | 32 | 3 | 0 |
| Jul | 1 | 90 | 7 | 1 | 0 |
| Aug | 3 | 93 | 3 | 1 | 0 |
| Sep | 3 | 92 | 4 | 1 | 0 |
| Oct | 1 | 87 | 13 | 0 | 0 |
| Nov | 0 | 42 | 56 | 1 | 0 |
| Dec | 0 | 1 | 77 | 21 | 1 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Across the year, average wind speed in Santiago de Surco is typically light breeze, near 15 km/h, and varies moderately with the seasons.
The windier part of the year lasts 6.8 months, from around May 10 to Dec 3. The windiest month is August, averaging about 18 km/h (light breeze).
The calmer part of the year runs from around Dec 4 to May 9, with February the calmest month at about 11 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 12 | 11 | 12 | 13 | 15 | 17 | 17 | 18 | 18 | 17 | 16 | 14 |
| Feels | light breeze | calm | calm | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 12 | light breeze |
| Feb | 11 | calm |
| Mar | 12 | calm |
| Apr | 13 | light breeze |
| May | 15 | light breeze |
| Jun | 17 | light breeze |
| Jul | 17 | light breeze |
| Aug | 18 | light breeze |
| Sep | 18 | light breeze |
| Oct | 17 | light breeze |
| Nov | 16 | light breeze |
| Dec | 14 | light breeze |
Best time to visit Santiago de Surco
To characterize how pleasant the weather is in Santiago de Surco throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around mid January, Santiago de Surco is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Santiago de Surco for general outdoor tourist activities is from early October to mid June, with a peak score in the third week of April.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 7.3 | 7.3 | 7.4 | 7.4 | 6.9 | 6.1 | 5.5 | 5.5 | 5.7 | 6.2 | 6.8 | 7.0 |
| Rating | good | good | good | good | good | good | good | good | good | good | good | good |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 7.3 | good |
| Feb | 7.3 | good |
| Mar | 7.4 | good |
| Apr | 7.4 | good |
| May | 6.9 | good |
| Jun | 6.1 | good |
| Jul | 5.5 | good |
| Aug | 5.5 | good |
| Sep | 5.7 | good |
| Oct | 6.2 | good |
| Nov | 6.8 | good |
| Dec | 7.0 | good |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Santiago de Surco for hot-weather activities is from early January to mid April, with a peak score in the last week of February.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for Santiago de Surco, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
For a warm-season trip around February (highs near 23°C), the essentials are light clothes and sun protection. In the cold season around August (highs near 16°C), pack a warm layer and sun protection.
In February, Santiago de Surco sees daytime highs around 23°C and nights near 21°C. Pack sun protection. Worth having: light clothes.
Sea temperature near Santiago de Surco
Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.
The sea at the nearest coast (about 13 km away) is warmest in February at about 22°C and coldest in September near 17°C.
It's comfortable for a long swim from Jan 1 to Apr 9 — about 3.3 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 21 | 22 | 21 | 20 | 19 | 18 | 18 | 17 | 17 | 17 | 18 | 19 |
| Comfort | Refreshing | Refreshing | Refreshing | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 21 | Refreshing |
| Feb | 22 | Refreshing |
| Mar | 21 | Refreshing |
| Apr | 20 | Cool |
| May | 19 | Cool |
| Jun | 18 | Cool |
| Jul | 18 | Cool |
| Aug | 17 | Cool |
| Sep | 17 | Cool |
| Oct | 17 | Cool |
| Nov | 18 | Cool |
| Dec | 19 | Cool |
UV index (midday) in Santiago de Surco by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
Under clear skies, the midday UV index in Santiago de Surco peaks around February 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 8 (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) | 14 | 16 | 13 | 12 | 10 | 8 | 8 | 10 | 10 | 13 | 12 | 13 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 16 | Extreme |
| Mar | 13 | Extreme |
| Apr | 12 | Extreme |
| May | 10 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 10 | Extreme |
| Sep | 10 | Extreme |
| Oct | 13 | Extreme |
| Nov | 12 | Extreme |
| Dec | 13 | Extreme |
Average hourly UV index in Santiago de Surco
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in February the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 7 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 8.5 | 8.5 | 8 | 7.5 | 7 | 6.5 | 7 | 7.5 | 7.5 | 8 | 8 | 8.5 |
| UV ≥ 6 (h/day) | 7 | 7 | 6.5 | 5.5 | 5 | 4 | 4 | 5 | 5.5 | 6 | 6 | 6.5 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 8.5 | 7 |
| Feb | 8.5 | 7 |
| Mar | 8 | 6.5 |
| Apr | 7.5 | 5.5 |
| May | 7 | 5 |
| Jun | 6.5 | 4 |
| Jul | 7 | 4 |
| Aug | 7.5 | 5 |
| Sep | 7.5 | 5.5 |
| Oct | 8 | 6 |
| Nov | 8 | 6 |
| Dec | 8.5 | 6.5 |
Air quality in Santiago de Surco by month
Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.
Air quality in Santiago de Surco is worst in March — around 23 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 17 | 20 | 23 | 22 | 23 | 22 | 20 | 19 | 18 | 18 | 17 | 17 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 17 | Moderate |
| Feb | 20 | Moderate |
| Mar | 23 | Moderate |
| Apr | 22 | Moderate |
| May | 23 | Moderate |
| Jun | 22 | Moderate |
| Jul | 20 | Moderate |
| Aug | 19 | Moderate |
| Sep | 18 | Moderate |
| Oct | 18 | Moderate |
| Nov | 17 | Moderate |
| Dec | 17 | Moderate |
Growing season
Santiago de Surco is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 100 | 0 |
Growing degree days
Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Santiago de Surco banks about 2,961 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around February.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 338 | 331 | 355 | 292 | 246 | 200 | 181 | 168 | 165 | 187 | 218 | 281 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 338 |
| Feb | 331 |
| Mar | 355 |
| Apr | 292 |
| May | 246 |
| Jun | 200 |
| Jul | 181 |
| Aug | 168 |
| Sep | 165 |
| Oct | 187 |
| Nov | 218 |
| Dec | 281 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
Santiago de Surco receives about 6.0 kWh/m² a day of solar energy on average — intense — with a clear seasonal swing between 4.8 and 7.1 kWh/m².
The brighter stretch of the year lasts 6.4 months, from around Aug 28 to Mar 9. The brightest month is November, averaging about 7.1 kWh/m² (intense).
The dimmest month is June, down near 4.9 kWh/m² — roughly 31% less than the November peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.4 | 6.1 | 6.0 | 5.8 | 5.3 | 4.9 | 5.1 | 5.7 | 6.4 | 6.9 | 7.1 | 6.8 |
| Level | Intense | Intense | Intense | Bright | Bright | Bright | Bright | Bright | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 6.4 | Intense |
| Feb | 6.1 | Intense |
| Mar | 6.0 | Intense |
| Apr | 5.8 | Bright |
| May | 5.3 | Bright |
| Jun | 4.9 | Bright |
| Jul | 5.1 | Bright |
| Aug | 5.7 | Bright |
| Sep | 6.4 | Intense |
| Oct | 6.9 | Intense |
| Nov | 7.1 | Intense |
| Dec | 6.8 | Intense |
Where is Santiago de Surco?
Santiago de Surco sits at 12.1°S, 77.0°W, 92 m above sea level, in Peru. The nearest listed city is Barranco, 1.0 km away.
Topography around Santiago de Surco
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Santiago de Surco.
Within 3 km, the terrain around Santiago de Surco has only modest variations in elevation — a maximum elevation change of 158 m around an average of 86 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,046 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,959 m.
The land around Santiago de Surco is covered by artificial surfaces (86%) within 3 km, artificial surfaces (43%) and water (35%) within 16 km, and water (43%) and bare terrain (31%) within 80 km.
Peru travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B / C
- 220 V · 60 Hz
- Prices
- ≈ 51% of US
- price level, 2025
- GDP per capita
- $9,684
- 2025
- Happiness
- 6.0 / 10
- World Happiness, 2025
- Safe drinking water
- 49%
- of population, 2024
- Homicide rate
- 8.6
- per 100k, 2021
- Road deaths
- 13.6
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Moderate
- EF EPI 519
- 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 Santiago de Surco (-12.1359°, -77.0074°, elevation 92 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. 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).