Pregnancy Week 33 — Baby Development, Size & What to Expect

Week 33 of pregnancy — 3rd trimester. Baby is the size of a honeydew melon 🍈, approximately 43.6cm long and weighing 1.92 kg. Skull bones not yet fused (for delivery). Immune system boosting. 82% of the 40-week journey complete, 7 weeks remaining.

PREGNANCY WEEK 333rd TRIMESTER

🍈

honeydew melon

baby is about the size of a honeydew melon

WEEK

33

of 40

LENGTH

43.6cm

crown to rump

WEIGHT

1.92 kg

approximate

Progress82% complete
Wk 13rd Trimester (Weeks 27–40)Wk 40

7 weeks remaining · Skull bones not yet fused (for delivery). Immune system boosting.

WEEK 33 — BABY'S DEVELOPMENT

3RD TRIMESTER · Weeks 27–40

Skull bones not yet fused (for delivery). Immune system boosting.

HOW YOU MAY FEEL

Baby gaining about 230g/week. Sleeping position: left side recommended.

WEEK 33 KEY FACTS

Gestational age

Week 33

Trimester

3rd (T3)

Baby length

43.6cm

Baby weight

1.92 kg

Progress

82% complete

Weeks left

7 weeks

FREQUENTLY ASKED QUESTIONS

What happens at week 33 of pregnancy?

At week 33 of pregnancy (3rd trimester):\n\nBaby development: Skull bones not yet fused (for delivery). Immune system boosting.\n\nBaby size: honeydew melon 🍈\nLength: approximately 43.6cm (crown to rump)\nWeight: approximately 1.92 kg\n\nPregnancy progress: 82% complete (7 weeks remaining)\n\nGestational age is counted from the first day of your last menstrual period (LMP), not from conception. Week 33 begins on day 225 and ends on day 231 from your LMP.

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Pregnancy week 33 · 3rd trimester · Baby size: honeydew melon 🍈 · 43.6cm · 1.92 kg · Sources: ACOG, WHO fetal growth data