Chalkída in Summer
In summer (June, July and August), Chalkída sees average daytime highs around 30°C and overnight lows near 21°C, with 35 mm of rain over about 7 wet days across the season. It is the warmest season of the year and the driest season of the year.
Over the season highs climb from about 27°C in early June to 29°C by late August. The sky is clear or mostly clear about 88% of the time across summer, and the air most often feels humid.
Summer is Chalkída's 3rd-best season to visit on our travel score. For the whole year in context, see Chalkída's year-round climate.
- Avg daytime high
- 30°C
- warmest season of the year
- Avg overnight low
- 21°C
- Rainfall
- 35 mm
- 7 wet days
- Avg wind
- 8 km/h
- Travel score
- 6.6
- 3rd-best season
- Months
- Jun · Jul · Aug
Temperature in Chalkída in Summer
Over the season highs climb from about 27°C in early June to 29°C by late August.
A typical summer day in Chalkída reaches about 30°C and drops to 21°C overnight. The warmest of the three months is July, the coolest June.
Chalkída weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 12° / 5° | 67 | 9.5 | 1.4 | 9.6 | 3.0 |
| Feb | 13° / 5° | 60 | 8.3 | 1.2 | 10.5 | 3.6 |
| Mar | 15° / 7° | 63 | 7.7 | 0.5 | 11.7 | 5.0 |
| Apr | 19° / 10° | 33 | 5.9 | 0 | 13 | 6.9 |
| May | 24° / 15° | 31 | 4.9 | 0 | 14.1 | 8.0 |
| Jun | 29° / 19° | 14 | 2.8 | 0 | 14.6 | 7.1 |
| Jul | 31° / 22° | 11 | 2.2 | 0 | 14.4 | 6.2 |
| Aug | 30° / 22° | 10 | 2.2 | 0 | 13.5 | 6.4 |
| Sep | 27° / 19° | 29 | 3.9 | 0 | 12.3 | 7.8 |
| Oct | 22° / 15° | 40 | 6 | 0 | 11 | 7.5 |
| Nov | 17° / 10° | 52 | 7 | 0 | 9.9 | 5.9 |
| Dec | 13° / 7° | 77 | 9.3 | 0.9 | 9.4 | 3.6 |
Cloud cover in Summer
The sky is clear or mostly clear about 88% of the time across summer.
Chance of precipitation in Summer
Chalkída gets around 35 mm of rain over 7 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 8 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 30 min in early June to 12 h 54 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 7.1 kWh/m².
Is summer a good time to visit Chalkída?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Chalkída for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Chalkída in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Chalkída sees daytime highs around 30°C and nights near 21°C. Pack light clothes and sun protection. About 7 days see rain.
Sea temperature near Chalkída in Summer
The nearest coast averages about 25°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 46 km away) is warmest in August at about 26°C and coldest in February near 14°C.
It's comfortable for a long swim from May 29 to Oct 29 — about 5.1 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 14 | 14 | 14 | 15 | 18 | 23 | 25 | 26 | 24 | 21 | 18 | 16 |
| Comfort | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Warm | Warm | Warm | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 14 | Bracing |
| Feb | 14 | Bracing |
| Mar | 14 | Bracing |
| Apr | 15 | Cool |
| May | 18 | Cool |
| Jun | 23 | Refreshing |
| Jul | 25 | Warm |
| Aug | 26 | Warm |
| Sep | 24 | Warm |
| Oct | 21 | Refreshing |
| Nov | 18 | Cool |
| Dec | 16 | Cool |
UV index in Chalkída in Summer
Clear-sky midday UV across summer averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Chalkída peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 7 | 7 | 9 | 9 | 9 | 7 | 5 | 3 | 2 |
| Level | Low | Moderate | Moderate | Very high | High | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 7 | Very high |
| May | 7 | High |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 9 | Very high |
| Sep | 7 | High |
| Oct | 5 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Chalkída in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Chalkída is worst in August — around 21 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 8 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) | 11 | 13 | 15 | 15 | 14 | 12 | 18 | 21 | 11 | 10 | 10 | 8 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Good | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 13 | Moderate |
| Mar | 15 | Moderate |
| Apr | 15 | Moderate |
| May | 14 | Moderate |
| Jun | 12 | Good |
| Jul | 18 | Moderate |
| Aug | 21 | Moderate |
| Sep | 11 | Good |
| Oct | 10 | Good |
| Nov | 10 | Good |
| Dec | 8 | Good |
Where is Chalkída?
Chalkída sits at 38.5°N, 23.6°E, 22 m above sea level, in Greece. The nearest listed city is Thívai, 29 km away.
Topography around Chalkída
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Chalkída.
Within 3 km, the terrain around Chalkída has significant variations in elevation — a maximum elevation change of 275 m around an average of 20 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,008 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,722 m.
The land around Chalkída is covered by water (46%) and artificial surfaces (24%) within 3 km, trees (29%) and water (28%) within 16 km, and water (48%) and trees (27%) within 80 km.
Greece travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 60% of US
- price level, 2025
- GDP per capita
- $26,948
- 2025
- Happiness
- 5.7 / 10
- World Happiness, 2025
- Safe drinking water
- 97%
- of population, 2024
- Homicide rate
- 0.8
- per 100k, 2023
- Road deaths
- 8.3
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- High
- EF EPI 592
- 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 Chalkída (38.4635°, 23.6028°, elevation 22 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.