Butterhead lettuce · Kimpese, Bas-Congo, Democratic Republic of the Congo
When to plant butterhead lettuce in Kimpese
Main outdoor window
1-17 Jun
A climate estimate. Check your soil, forecast and cultivar.
Timed from temperature
June to July
No frost on record in Kimpese, so the months this crop fits in our temperature model set the timing. This does not confirm local suitability.
First autumn frost
no autumn frost
The far end of the outdoor season.
Temperature-based estimate. Kimpese has no dependable frost season.
These dates do not account for rain, humidity or waterlogging. Check the local growing season,
especially in monsoon climates, before treating this window as a planting recommendation.
Rainfall check: the wettest month is November (about 185 mm), and the driest is
July (about 2 mm).
Compare all months and check the limitations before choosing the season.
Step by step in Kimpese
Download these planting dates (.ics)
Import into Apple Calendar, Google Calendar or Outlook. Dates use the selected risk level and are planning estimates, not frost alerts.
Each window is a planning range. Check the forecast, soil and cultivar before planting; a later date is not automatically safer in hot or wet conditions.
Sow direct
1-17 Jun
The opening weeks of the stretch when the average temperature suits this crop, which here runs from June to July. There is no frost to work around, so heat is what sets the timing.
Butterhead lettuce through the year
Against the monthly temperature record in Kimpese
Seasonal context
Rainfall and the growing season in Kimpese
November has the highest average precipitation (185 mm); July has the lowest (2 mm). Compare this pattern with the planting windows and your water supply.
During wetter months, check that beds and containers drain after heavy rain. During drier months, plan how you will keep seeds and new transplants watered. Monthly averages can hide long dry spells and intense storms; they do not show soil moisture, humidity or this week's weather.
Frost-free does not mean every month is suitable. In tropical and monsoon climates, rainfall, heat, drainage and the cultivar can set the practical growing season. Match the temperature window to these conditions and check advice from a local grower before buying planting material.
Source: NASA POWER, corrected MERRA-2 precipitation, 2001–2020. Values are approximate monthly totals, including the water equivalent of snow, from the nearest 0.5° × 0.625° grid cell. This reference period differs from the temperature record. Rainfall provides context and does not change the calculated planting dates. Method and limitations.
Monthly growing conditions in Kimpese
Compare the planting window with the local temperature pattern. These are historical monthly averages, not this year's forecast or measured soil temperatures. Average frost days do not tell you whether a particular night will freeze.
| Month | Average low | Average high | Frost days |
|---|---|---|---|
| January | 21.6°C (70.8°F)70.8°F (21.6°C) | 29.3°C (84.8°F)84.8°F (29.3°C) | 0.0 |
| February | 21.9°C (71.3°F)71.3°F (21.9°C) | 29.9°C (85.9°F)85.9°F (29.9°C) | 0.0 |
| March | 22°C (71.7°F)71.7°F (22°C) | 29.9°C (85.9°F)85.9°F (29.9°C) | 0.0 |
| April | 22.1°C (71.8°F)71.8°F (22.1°C) | 29.2°C (84.5°F)84.5°F (29.2°C) | 0.0 |
| May | 21.3°C (70.4°F)70.4°F (21.3°C) | 29.8°C (85.6°F)85.6°F (29.8°C) | 0.0 |
| June | 19.2°C (66.5°F)66.5°F (19.2°C) | 30.6°C (87.1°F)87.1°F (30.6°C) | 0.0 |
| July | 18.2°C (64.8°F)64.8°F (18.2°C) | 30.9°C (87.7°F)87.7°F (30.9°C) | 0.0 |
| August | 19.1°C (66.3°F)66.3°F (19.1°C) | 31.6°C (88.8°F)88.8°F (31.6°C) | 0.0 |
| September | 20.7°C (69.2°F)69.2°F (20.7°C) | 32.5°C (90.4°F)90.4°F (32.5°C) | 0.0 |
| October | 21.6°C (70.8°F)70.8°F (21.6°C) | 31.6°C (88.8°F)88.8°F (31.6°C) | 0.0 |
| November | 21.6°C (70.8°F)70.8°F (21.6°C) | 29.2°C (84.5°F)84.5°F (29.2°C) | 0.0 |
| December | 21.5°C (70.7°F)70.7°F (21.5°C) | 28.7°C (83.7°F)83.7°F (28.7°C) | 0.0 |
For butterhead lettuce, also check drainage, sunlight and cultivar requirements. See the rainfall context above; humidity, irrigation and local pest pressure are not calculated.
The catalog flowering or harvest months are not verified for this frost-free climate. Ask a local grower about the cultivar’s seasonal cycle.
Local growing check
Before choosing butterhead lettuce for Kimpese
- November is the wettest month in the rainfall grid, averaging about 185 mm. Check how your own bed drains and plan watering around actual soil moisture; monthly rain totals are not an irrigation schedule.
The temperature and rainfall tables on this page show the underlying climate estimates. How these suitability checks work · Record what happens in your garden.
Before you plant butterhead lettuce
Use the calendar to plan ahead, then check the conditions in your own garden.
- Measure the soil at sowing depth. Aim for at least 4.5°C (40.1°F); the calendar estimates soil warmth from air temperatures and cannot measure your bed.
- In a frost-free climate, check seasonal rainfall, humidity and heat before planting. A month with suitable average temperatures can still be too wet, dry or hot for this crop.
- Harden off plants raised indoors: gradually expose them to outdoor light, wind and temperature before their final move into the bed.
- Use the maturity range on your seed packet when choosing a variety. Cold, short days and transplant stress can make harvest later than the calendar estimate.
Protect the soft head from crowding and water stress
Leave enough room for the outer leaves and keep the root zone evenly moist. In hot conditions, compare a heat-suitable variety or cooler position; drought can bring bitterness and bolting.
Harvest the head gently and use it promptly, or take modest numbers of outer leaves while the centre continues to grow. Succession sowing is more useful than leaving mature soft heads indefinitely in the bed.
What to record this season
How many mature heads could you use before quality declined? Add the cultivar, sowing date and conditions to your growing record so you can compare next season.
Further reading: RHS lettuce growing guide . General crop guidance; local dates on this site are calculated separately. Source checked 19 September 2026 by Safe to Plant; this is not an expert review.
The RHS guide is written for UK growing conditions. Use its cultivation advice with local cultivar and seasonal guidance; its calendar months are not worldwide recommendations.
How the dates are calculated and their limits · Keep a growing record · Report a local discrepancy
Why these dates
Frost-relative timing needs a dependable seasonal frost date. Kimpese has no such date in this record, so this page compares monthly temperatures with the crop's model range instead. Local wet and dry seasons, day length and cultivar requirements still need a separate check.
The model uses a growing-temperature band for butterhead lettuce between 4.5°C (40.1°F)40.1°F (4.5°C) and 25°C (77°F)77°F (25°C) — and in Kimpese that is June to July, 2 months of the year, taken from this location's own monthly averages. The planting window begins near the start of this period.
Also in Kimpese
Other vegetables to time
Growing butterhead lettuce in Kimpese
Can I grow butterhead lettuce in Kimpese?
The calendar estimates a planting window, not a guarantee of success. November is the wettest month in the rainfall grid, averaging about 185 mm. Check how your own bed drains and plan watering around actual soil moisture; monthly rain totals are not an irrigation schedule.
When should I plant butterhead lettuce in Kimpese?
The temperature-based window is 1-17 Jun. Kimpese has no dependable frost season: June to July have monthly averages inside the model range for butterhead lettuce. Check seasonal rainfall, heat and cultivar requirements before planting.
How much frost will butterhead lettuce tolerate?
Protect tender growth from frost and wait for suitable growing warmth. The catalog cold-damage figure is a reference, not a guarantee: duration, wind, plant age and acclimatisation affect damage.