Saints Constantine and Helena Temperature by Month
The average annual maximum temperature in Saints Constantine and Helena, Varna Province, Bulgaria is 17°C (63°F), with daytime highs ranging from 6°C (43°F) in January to 27°C (81°F) in August. This page covers monthly averages, day-night differences, and how Saints Constantine and Helena compares to cities worldwide.
Saints Constantine and Helena Monthly Temperatures
In Saints Constantine and Helena, temperatures differ significantly between summer and winter months. Nighttime lows reflect this range, dropping from 21°C (70°F) in August to 1°C (34°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Saints Constantine and Helena by month:
Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. August, the warmest month of the year, receives 280 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
49-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in June
Historical Saints Constantine and Helena Temperatures: 1976-2026
Browse day-by-day temperature records for Saints Constantine and Helena spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Saints Constantine and Helena vs Bulgaria
The map below shows the annual temperature across Bulgaria. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Saints Constantine and Helena vs World: Temperature Compared
Saints Constantine and Helena's average annual maximum temperature is 17°C (63°F). To put that in context, here's how it compares to a few well-known destinations:
Seville, Spain averages 23°C (73°F) a year — one of the warmer cities in Western Europe, with long hot summers.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
Beijing, China averages 20°C (68°F) annually, but with big seasonal swings — very cold winters and hot summers.
Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.
What Does the Temperature Feel Like in Saints Constantine and Helena?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Saints Constantine and Helena, January is the coolest month, with average highs of 6°C (43°F) and humidity around 78% — considered high. In August, the warmest month, temperatures average 27°C (81°F) with 69% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.
Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.
For more on Saints Constantine and Helena's weather — including monthly rainfall, sunshine hours, and humidity — visit our Saints Constantine and Helena climate page.
